215724016012 has 36 divisors (see below), whose sum is σ = 396674636400. Its totient is φ = 102454090464.

The previous prime is 215724015977. The next prime is 215724016093. The reversal of 215724016012 is 210610427512.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54377653 + ... + 54381619.

It is an arithmetic number, because the mean of its divisors is an integer number (11018739900).

Almost surely, 2^215724016012 is an apocalyptic number.

It is an amenable number.

215724016012 is a deficient number, since it is larger than the sum of its proper divisors (180950620388).

215724016012 is an equidigital number, since it uses as much as digits as its factorization.

215724016012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8110 (or 4141 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 31.

The spelling of 215724016012 in words is "two hundred fifteen billion, seven hundred twenty-four million, sixteen thousand, twelve".