2031551265556 has 6 divisors (see below), whose sum is σ = 3555214714730. Its totient is φ = 1015775632776.

The previous prime is 2031551265533. The next prime is 2031551265571. The reversal of 2031551265556 is 6555621551302.

It can be written as a sum of positive squares in only one way, i.e., 1747551802500 + 283999463056 = 1321950^2 + 532916^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 253943908191 + ... + 253943908198.

Almost surely, 2^{2031551265556} is an apocalyptic number.

It is an amenable number.

2031551265556 is a deficient number, since it is larger than the sum of its proper divisors (1523663449174).

2031551265556 is a wasteful number, since it uses less digits than its factorization.

2031551265556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507887816393 (or 507887816391 counting only the distinct ones).

The product of its (nonzero) digits is 1350000, while the sum is 46.

The spelling of 2031551265556 in words is "two trillion, thirty-one billion, five hundred fifty-one million, two hundred sixty-five thousand, five hundred fifty-six".