215156290516 has 6 divisors (see below), whose sum is σ = 376523508410. Its totient is φ = 107578145256.

The previous prime is 215156290463. The next prime is 215156290537. The reversal of 215156290516 is 615092651512.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 213860002500 + 1296288016 = 462450^2 + 36004^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26894536311 + ... + 26894536318.

Almost surely, 2^215156290516 is an apocalyptic number.

It is an amenable number.

215156290516 is a deficient number, since it is larger than the sum of its proper divisors (161367217894).

215156290516 is a wasteful number, since it uses less digits than its factorization.

215156290516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53789072633 (or 53789072631 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 43.

The spelling of 215156290516 in words is "two hundred fifteen billion, one hundred fifty-six million, two hundred ninety thousand, five hundred sixteen".