215015542460 has 48 divisors (see below), whose sum is σ = 452852400000. Its totient is φ = 85755124224.

The previous prime is 215015542459. The next prime is 215015542493. The reversal of 215015542460 is 64245510512.

It is a self number, because there is not a number n which added to its sum of digits gives 215015542460.

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, 13224416 + ... + 13240664.

It is an arithmetic number, because the mean of its divisors is an integer number (9434425000).

Almost surely, 2^215015542460 is an apocalyptic number.

215015542460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

215015542460 is an abundant number, since it is smaller than the sum of its proper divisors (237836857540).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

215015542460 is a wasteful number, since it uses less digits than its factorization.

215015542460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18150 (or 18148 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 35.

The spelling of 215015542460 in words is "two hundred fifteen billion, fifteen million, five hundred forty-two thousand, four hundred sixty".