12578468402 has 8 divisors (see below), whose sum is σ = 19977567516. Its totient is φ = 5919279232.

The previous prime is 12578468363. The next prime is 12578468411. The reversal of 12578468402 is 20486487521.

It can be written as a sum of positive squares in 2 ways, for example, as 11787227761 + 791240641 = 108569^2 + 28129^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×12578468402² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 184977443 + ... + 184977510.

Almost surely, 2^12578468402 is an apocalyptic number.

12578468402 is a deficient number, since it is larger than the sum of its proper divisors (7399099114).

12578468402 is a wasteful number, since it uses less digits than its factorization.

12578468402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369954972.

The product of its (nonzero) digits is 860160, while the sum is 47.

The spelling of 12578468402 in words is "twelve billion, five hundred seventy-eight million, four hundred sixty-eight thousand, four hundred two".