215072945544 has 64 divisors (see below), whose sum is σ = 565056613440. Its totient is φ = 68131203840.

The previous prime is 215072945533. The next prime is 215072945567. The reversal of 215072945544 is 445549270512.

It is a happy number.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 215072945493 and 215072945502.

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, 2778087 + ... + 2854454.

It is an arithmetic number, because the mean of its divisors is an integer number (8829009585).

Almost surely, 2^215072945544 is an apocalyptic number.

215072945544 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

215072945544 is an abundant number, since it is smaller than the sum of its proper divisors (349983667896).

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

215072945544 is a wasteful number, since it uses less digits than its factorization.

215072945544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5632630 (or 5632626 counting only the distinct ones).

The product of its (nonzero) digits is 2016000, while the sum is 48.

The spelling of 215072945544 in words is "two hundred fifteen billion, seventy-two million, nine hundred forty-five thousand, five hundred forty-four".