2157625764704 has 48 divisors (see below), whose sum is σ = 4252735173456. Its totient is φ = 1077566668800.

The previous prime is 2157625764683. The next prime is 2157625764799. The reversal of 2157625764704 is 4074675267512.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2157625764704.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 146461019 + ... + 146475749.

It is an arithmetic number, because the mean of its divisors is an integer number (88598649447).

Almost surely, 2^{2157625764704} is an apocalyptic number.

It is an amenable number.

2157625764704 is a deficient number, since it is larger than the sum of its proper divisors (2095109408752).

2157625764704 is a wasteful number, since it uses less digits than its factorization.

2157625764704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19719 (or 19711 counting only the distinct ones).

The product of its (nonzero) digits is 19756800, while the sum is 56.

The spelling of 2157625764704 in words is "two trillion, one hundred fifty-seven billion, six hundred twenty-five million, seven hundred sixty-four thousand, seven hundred four".