215551044352 has 72 divisors (see below), whose sum is σ = 517606208000. Its totient is φ = 87516951552.

The previous prime is 215551044347. The next prime is 215551044431. The reversal of 215551044352 is 253440155512.

215551044352 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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, 3131352 + ... + 3199447.

Almost surely, 2^215551044352 is an apocalyptic number.

It is an amenable number.

215551044352 is an abundant number, since it is smaller than the sum of its proper divisors (302055163648).

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

215551044352 is an equidigital number, since it uses as much as digits as its factorization.

215551044352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6330841 (or 6330827 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 37.

Adding to 215551044352 its reverse (253440155512), we get a palindrome (468991199864).

The spelling of 215551044352 in words is "two hundred fifteen billion, five hundred fifty-one million, forty-four thousand, three hundred fifty-two".