2156207037542 has 16 divisors (see below), whose sum is σ = 3254424222960. Its totient is φ = 1071400066272.

The previous prime is 2156207037529. The next prime is 2156207037571. The reversal of 2156207037542 is 2457307026512.

It is a junction number, because it is equal to n+sod(n) for n = 2156207037493 and 2156207037502.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3730148 + ... + 4269240.

It is an arithmetic number, because the mean of its divisors is an integer number (203401513935).

Almost surely, 2^{2156207037542} is an apocalyptic number.

2156207037542 is a deficient number, since it is larger than the sum of its proper divisors (1098217185418).

2156207037542 is a wasteful number, since it uses less digits than its factorization.

2156207037542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551527.

The product of its (nonzero) digits is 705600, while the sum is 44.

The spelling of 2156207037542 in words is "two trillion, one hundred fifty-six billion, two hundred seven million, thirty-seven thousand, five hundred forty-two".