2157926552436 has 24 divisors (see below), whose sum is σ = 5035387037184. Its totient is φ = 719276696320.

The previous prime is 2157926552423. The next prime is 2157926552477. The reversal of 2157926552436 is 6342556297512.

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, 3738900 + ... + 4277291.

It is an arithmetic number, because the mean of its divisors is an integer number (209807793216).

Almost surely, 2^{2157926552436} is an apocalyptic number.

It is an amenable number.

2157926552436 is an abundant number, since it is smaller than the sum of its proper divisors (2877460484748).

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

2157926552436 is a wasteful number, since it uses less digits than its factorization.

2157926552436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8038631 (or 8038629 counting only the distinct ones).

The product of its digits is 27216000, while the sum is 57.

The spelling of 2157926552436 in words is "two trillion, one hundred fifty-seven billion, nine hundred twenty-six million, five hundred fifty-two thousand, four hundred thirty-six".