1257153709232 has 40 divisors (see below), whose sum is σ = 2458181416320. Its totient is φ = 622788346880.

The previous prime is 1257153709219. The next prime is 1257153709237. The reversal of 1257153709232 is 2329073517521.

It is not an unprimeable number, because it can be changed into a prime (1257153709237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4917857 + ... + 5167167.

It is an arithmetic number, because the mean of its divisors is an integer number (61454535408).

Almost surely, 2^{1257153709232} is an apocalyptic number.

It is an amenable number.

1257153709232 is a deficient number, since it is larger than the sum of its proper divisors (1201027707088).

1257153709232 is a wasteful number, since it uses less digits than its factorization.

1257153709232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252221 (or 252215 counting only the distinct ones).

The product of its (nonzero) digits is 793800, while the sum is 47.

The spelling of 1257153709232 in words is "one trillion, two hundred fifty-seven billion, one hundred fifty-three million, seven hundred nine thousand, two hundred thirty-two".