2156251322630 has 16 divisors (see below), whose sum is σ = 3881541384864. Its totient is φ = 862436305920.

The previous prime is 2156251322629. The next prime is 2156251322647. The reversal of 2156251322630 is 362231526512.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7886762 + ... + 8155581.

It is an arithmetic number, because the mean of its divisors is an integer number (242596336554).

Almost surely, 2^{2156251322630} is an apocalyptic number.

2156251322630 is a deficient number, since it is larger than the sum of its proper divisors (1725290062234).

2156251322630 is a wasteful number, since it uses less digits than its factorization.

2156251322630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16055791.

The product of its (nonzero) digits is 129600, while the sum is 38.

The spelling of 2156251322630 in words is "two trillion, one hundred fifty-six billion, two hundred fifty-one million, three hundred twenty-two thousand, six hundred thirty".