215105952264 has 64 divisors (see below), whose sum is σ = 614824179840. Its totient is φ = 61435269120.

The previous prime is 215105952251. The next prime is 215105952311. The reversal of 215105952264 is 462259501512.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 196072 + ... + 684584.

It is an arithmetic number, because the mean of its divisors is an integer number (9606627810).

Almost surely, 2^215105952264 is an apocalyptic number.

215105952264 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

215105952264 is an abundant number, since it is smaller than the sum of its proper divisors (399718227576).

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

215105952264 is a wasteful number, since it uses less digits than its factorization.

215105952264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491150 (or 491146 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 42.

The spelling of 215105952264 in words is "two hundred fifteen billion, one hundred five million, nine hundred fifty-two thousand, two hundred sixty-four".