2156125043356 has 24 divisors (see below), whose sum is σ = 3775497872720. Its totient is φ = 1077411549312.

The previous prime is 2156125043353. The next prime is 2156125043389. The reversal of 2156125043356 is 6533405216512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2156125043353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57147010 + ... + 57184726.

Almost surely, 2^{2156125043356} is an apocalyptic number.

It is an amenable number.

2156125043356 is a deficient number, since it is larger than the sum of its proper divisors (1619372829364).

2156125043356 is a wasteful number, since it uses less digits than its factorization.

2156125043356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45973 (or 45971 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 43.

The spelling of 2156125043356 in words is "two trillion, one hundred fifty-six billion, one hundred twenty-five million, forty-three thousand, three hundred fifty-six".