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12430581073 = 17969444587
BaseRepresentation
bin10111001001110101…
…11001110101010001
31012002022022221112121
423210322321311101
5200424212043243
65413250254241
7620020124101
oct134472716521
935068287477
1012430581073
1152a98145a9
1224aab87381
131231422721
1485cca3201
154cb4751ed
hex2e4eb9d51

12430581073 has 4 divisors (see below), whose sum is σ = 12500025840. Its totient is φ = 12361136308.

The previous prime is 12430581061. The next prime is 12430581091. The reversal of 12430581073 is 37018503421.

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-12430581073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12430581043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34722115 + ... + 34722472.

It is an arithmetic number, because the mean of its divisors is an integer number (3125006460).

Almost surely, 212430581073 is an apocalyptic number.

It is an amenable number.

12430581073 is a deficient number, since it is larger than the sum of its proper divisors (69444767).

12430581073 is an equidigital number, since it uses as much as digits as its factorization.

12430581073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69444766.

The product of its (nonzero) digits is 20160, while the sum is 34.

The spelling of 12430581073 in words is "twelve billion, four hundred thirty million, five hundred eighty-one thousand, seventy-three".

Divisors: 1 179 69444587 12430581073