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12403633630421 = 111127603057311
BaseRepresentation
bin1011010001111111001000…
…1011010010110011010101
31121220202221112222000122202
42310133302023102303111
53111210120202133141
642214052311334245
72420063414164145
oct264376213226325
947822845860582
1012403633630421
113a52395905550
121483aa7981385
136bc871a845a7
1430c4a65a6925
151679a882049b
hexb47f22d2cd5

12403633630421 has 4 divisors (see below), whose sum is σ = 13531236687744. Its totient is φ = 11276030573100.

The previous prime is 12403633630387. The next prime is 12403633630429.

12403633630421 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-12403633630421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12403633630429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 563801528645 + ... + 563801528666.

It is an arithmetic number, because the mean of its divisors is an integer number (3382809171936).

Almost surely, 212403633630421 is an apocalyptic number.

12403633630421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12403633630421 is a deficient number, since it is larger than the sum of its proper divisors (1127603057323).

12403633630421 is a wasteful number, since it uses less digits than its factorization.

12403633630421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1127603057322.

The product of its (nonzero) digits is 186624, while the sum is 38.

It can be divided in two parts, 1240363 and 3630421, that added together give a palindrome (4870784).

The spelling of 12403633630421 in words is "twelve trillion, four hundred three billion, six hundred thirty-three million, six hundred thirty thousand, four hundred twenty-one".

Divisors: 1 11 1127603057311 12403633630421