2153665770708 has 12 divisors (see below), whose sum is σ = 5025220131680. Its totient is φ = 717888590232.

The previous prime is 2153665770691. The next prime is 2153665770721. The reversal of 2153665770708 is 8070775663512.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89736073768 + ... + 89736073791.

Almost surely, 2^{2153665770708} is an apocalyptic number.

It is an amenable number.

2153665770708 is an abundant number, since it is smaller than the sum of its proper divisors (2871554360972).

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

2153665770708 is a wasteful number, since it uses less digits than its factorization.

2153665770708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179472147566 (or 179472147564 counting only the distinct ones).

The product of its (nonzero) digits is 14817600, while the sum is 57.

The spelling of 2153665770708 in words is "two trillion, one hundred fifty-three billion, six hundred sixty-five million, seven hundred seventy thousand, seven hundred eight".