12315967402 has 4 divisors (see below), whose sum is σ = 18473951106. Its totient is φ = 6157983700.

The previous prime is 12315967387. The next prime is 12315967427. The reversal of 12315967402 is 20476951321.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 9982207921 + 2333759481 = 99911^2 + 48309^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3078991849 + ... + 3078991852.

Almost surely, 2^12315967402 is an apocalyptic number.

12315967402 is a deficient number, since it is larger than the sum of its proper divisors (6157983704).

12315967402 is an equidigital number, since it uses as much as digits as its factorization.

12315967402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6157983703.

The product of its (nonzero) digits is 90720, while the sum is 40.

The spelling of 12315967402 in words is "twelve billion, three hundred fifteen million, nine hundred sixty-seven thousand, four hundred two".