12957618202 has 4 divisors (see below), whose sum is σ = 19436427306. Its totient is φ = 6478809100.

The previous prime is 12957618143. The next prime is 12957618211. The reversal of 12957618202 is 20281675921.

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., 7961814441 + 4995803761 = 89229^2 + 70681^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3239404549 + ... + 3239404552.

Almost surely, 2^12957618202 is an apocalyptic number.

12957618202 is a deficient number, since it is larger than the sum of its proper divisors (6478809104).

12957618202 is an equidigital number, since it uses as much as digits as its factorization.

12957618202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6478809103.

The product of its (nonzero) digits is 120960, while the sum is 43.

The spelling of 12957618202 in words is "twelve billion, nine hundred fifty-seven million, six hundred eighteen thousand, two hundred two".