215123079532 has 24 divisors (see below), whose sum is σ = 401749092864. Its totient is φ = 100437265152.

The previous prime is 215123079511. The next prime is 215123079547. The reversal of 215123079532 is 235970321512.

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, 12446383 + ... + 12463654.

It is an arithmetic number, because the mean of its divisors is an integer number (16739545536).

Almost surely, 2^215123079532 is an apocalyptic number.

It is an amenable number.

215123079532 is a deficient number, since it is larger than the sum of its proper divisors (186626013332).

215123079532 is a wasteful number, since it uses less digits than its factorization.

215123079532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24910185 (or 24910183 counting only the distinct ones).

The product of its (nonzero) digits is 113400, while the sum is 40.

The spelling of 215123079532 in words is "two hundred fifteen billion, one hundred twenty-three million, seventy-nine thousand, five hundred thirty-two".