1296653758972 has 48 divisors (see below), whose sum is σ = 2751842709504. Its totient is φ = 526500504000.

The previous prime is 1296653758957. The next prime is 1296653759057. The reversal of 1296653758972 is 2798573566921.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36544804 + ... + 36580267.

It is an arithmetic number, because the mean of its divisors is an integer number (57330056448).

Almost surely, 2^{1296653758972} is an apocalyptic number.

It is an amenable number.

1296653758972 is an abundant number, since it is smaller than the sum of its proper divisors (1455188950532).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1296653758972 is a wasteful number, since it uses less digits than its factorization.

1296653758972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73125130 (or 73125128 counting only the distinct ones).

The product of its digits is 342921600, while the sum is 70.

The spelling of 1296653758972 in words is "one trillion, two hundred ninety-six billion, six hundred fifty-three million, seven hundred fifty-eight thousand, nine hundred seventy-two".