1257868520332 has 6 divisors (see below), whose sum is σ = 2201269910588. Its totient is φ = 628934260164.

The previous prime is 1257868520323. The next prime is 1257868520339. The reversal of 1257868520332 is 2330258687521.

It is a self number, because there is not a number n which added to its sum of digits gives 1257868520332.

It is not an unprimeable number, because it can be changed into a prime (1257868520339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157233565038 + ... + 157233565045.

Almost surely, 2^{1257868520332} is an apocalyptic number.

It is an amenable number.

1257868520332 is a deficient number, since it is larger than the sum of its proper divisors (943401390256).

1257868520332 is a wasteful number, since it uses less digits than its factorization.

1257868520332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314467130087 (or 314467130085 counting only the distinct ones).

The product of its (nonzero) digits is 4838400, while the sum is 52.

The spelling of 1257868520332 in words is "one trillion, two hundred fifty-seven billion, eight hundred sixty-eight million, five hundred twenty thousand, three hundred thirty-two".