2156320534308 has 24 divisors (see below), whose sum is σ = 5031865050912. Its totient is φ = 718709158464.

The previous prime is 2156320534253. The next prime is 2156320534309. The reversal of 2156320534308 is 8034350236512.

It is a self number, because there is not a number n which added to its sum of digits gives 2156320534308.

It is not an unprimeable number, because it can be changed into a prime (2156320534309) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7904410 + ... + 8172657.

It is an arithmetic number, because the mean of its divisors is an integer number (209661043788).

Almost surely, 2^{2156320534308} is an apocalyptic number.

It is an amenable number.

2156320534308 is an abundant number, since it is smaller than the sum of its proper divisors (2875544516604).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2156320534308 is a wasteful number, since it uses less digits than its factorization.

2156320534308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16088251 (or 16088249 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 42.

The spelling of 2156320534308 in words is "two trillion, one hundred fifty-six billion, three hundred twenty million, five hundred thirty-four thousand, three hundred eight".