215151256336 has 45 divisors (see below), whose sum is σ = 424024337919. Its totient is φ = 105756432000.

The previous prime is 215151256283. The next prime is 215151256363. The reversal of 215151256336 is 633652151512.

It is a happy number.

The square root of 215151256336 is 463844.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 170275070736 + 44876185600 = 412644^2 + 211840^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 113176986 + ... + 113178886.

Almost surely, 2^215151256336 is an apocalyptic number.

215151256336 is the 463844-th square number.

It is an amenable number.

215151256336 is a deficient number, since it is larger than the sum of its proper divisors (208873081583).

215151256336 is an frugal number, since it uses more digits than its factorization.

215151256336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3932 (or 1964 counting only the distinct ones).

The product of its digits is 162000, while the sum is 40.

The spelling of 215151256336 in words is "two hundred fifteen billion, one hundred fifty-one million, two hundred fifty-six thousand, three hundred thirty-six".