215548045632 has 84 divisors (see below), whose sum is σ = 617958832660. Its totient is φ = 71834314752.

The previous prime is 215548045597. The next prime is 215548045637. The reversal of 215548045632 is 236540845512.

215548045632 is a `hidden beast` number, since 2 + 1 + 5 + 5 + 4 + 8 + 0 + 4 + 5 + 632 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 104882708736 + 110665336896 = 323856^2 + 332664^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215548045637) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2908494 + ... + 2981682.

Almost surely, 2^215548045632 is an apocalyptic number.

It is an amenable number.

215548045632 is an abundant number, since it is smaller than the sum of its proper divisors (402410787028).

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

215548045632 is a wasteful number, since it uses less digits than its factorization.

215548045632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78320 (or 78307 counting only the distinct ones).

The product of its (nonzero) digits is 1152000, while the sum is 45.

The spelling of 215548045632 in words is "two hundred fifteen billion, five hundred forty-eight million, forty-five thousand, six hundred thirty-two".