215715967126 has 32 divisors (see below), whose sum is σ = 373793253120. Its totient is φ = 92335773600.

The previous prime is 215715967109. The next prime is 215715967133. The reversal of 215715967126 is 621769517512.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1475305 + ... + 1614916.

It is an arithmetic number, because the mean of its divisors is an integer number (11681039160).

Almost surely, 2^215715967126 is an apocalyptic number.

215715967126 is a deficient number, since it is larger than the sum of its proper divisors (158077285994).

215715967126 is a wasteful number, since it uses less digits than its factorization.

215715967126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3090420.

The product of its digits is 1587600, while the sum is 52.

The spelling of 215715967126 in words is "two hundred fifteen billion, seven hundred fifteen million, nine hundred sixty-seven thousand, one hundred twenty-six".