215822057794 has 16 divisors (see below), whose sum is σ = 376961439168. Its totient is φ = 90749975472.

The previous prime is 215822057713. The next prime is 215822057809. The reversal of 215822057794 is 497750228512.

215822057794 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×215822057794² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145431912 + ... + 145433395.

It is an arithmetic number, because the mean of its divisors is an integer number (23560089948).

Almost surely, 2^215822057794 is an apocalyptic number.

215822057794 is a deficient number, since it is larger than the sum of its proper divisors (161139381374).

215822057794 is a wasteful number, since it uses less digits than its factorization.

215822057794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290865369.

The product of its (nonzero) digits is 2822400, while the sum is 52.

The spelling of 215822057794 in words is "two hundred fifteen billion, eight hundred twenty-two million, fifty-seven thousand, seven hundred ninety-four".