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12879304901 = 39619325079
BaseRepresentation
bin10111111111010101…
…01001100011000101
31020020120200110220122
423333222221203011
5202334100224101
65530000111325
7634106166611
oct137752514305
936216613818
1012879304901
11550a039441
1225b5305545
1312a3393598
148a270c341
15505a6051b
hex2ffaa98c5

12879304901 has 4 divisors (see below), whose sum is σ = 12879669600. Its totient is φ = 12878940204.

The previous prime is 12879304847. The next prime is 12879304943. The reversal of 12879304901 is 10940397821.

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, and also an emirpimes, since its reverse is a distinct semiprime: 10940397821 = 17643552813.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-12879304901 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 (12879300901) 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, 122921 + ... + 202158.

It is an arithmetic number, because the mean of its divisors is an integer number (3219917400).

Almost surely, 212879304901 is an apocalyptic number.

It is an amenable number.

12879304901 is a deficient number, since it is larger than the sum of its proper divisors (364699).

12879304901 is an equidigital number, since it uses as much as digits as its factorization.

12879304901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364698.

The product of its (nonzero) digits is 108864, while the sum is 44.

The spelling of 12879304901 in words is "twelve billion, eight hundred seventy-nine million, three hundred four thousand, nine hundred one".

Divisors: 1 39619 325079 12879304901