2156135563252 has 12 divisors (see below), whose sum is σ = 4116258802656. Its totient is φ = 980061619640.

The previous prime is 2156135563243. The next prime is 2156135563279. The reversal of 2156135563252 is 2523655316512.

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, 24501540448 + ... + 24501540535.

It is an arithmetic number, because the mean of its divisors is an integer number (343021566888).

Almost surely, 2^{2156135563252} is an apocalyptic number.

2156135563252 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2156135563252 is a deficient number, since it is larger than the sum of its proper divisors (1960123239404).

2156135563252 is a wasteful number, since it uses less digits than its factorization.

2156135563252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49003080998 (or 49003080996 counting only the distinct ones).

The product of its digits is 1620000, while the sum is 46.

The spelling of 2156135563252 in words is "two trillion, one hundred fifty-six billion, one hundred thirty-five million, five hundred sixty-three thousand, two hundred fifty-two".