215200715565 has 32 divisors (see below), whose sum is σ = 376274226816. Its totient is φ = 104158863360.

The previous prime is 215200715539. The next prime is 215200715579. The reversal of 215200715565 is 565517002512.

It is not a de Polignac number, because 215200715565 - 2⁷ = 215200715437 is a prime.

It is a super-2 number, since 2×215200715565² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1034992 + ... + 1225401.

It is an arithmetic number, because the mean of its divisors is an integer number (11758569588).

Almost surely, 2^215200715565 is an apocalyptic number.

It is an amenable number.

215200715565 is a deficient number, since it is larger than the sum of its proper divisors (161073511251).

215200715565 is a wasteful number, since it uses less digits than its factorization.

215200715565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2260989.

The product of its (nonzero) digits is 105000, while the sum is 39.

The spelling of 215200715565 in words is "two hundred fifteen billion, two hundred million, seven hundred fifteen thousand, five hundred sixty-five".