215545430544 has 20 divisors (see below), whose sum is σ = 556825695696. Its totient is φ = 71848476832.

The previous prime is 215545430531. The next prime is 215545430579. The reversal of 215545430544 is 445034545512.

It is a junction number, because it is equal to n+sod(n) for n = 215545430496 and 215545430505.

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 3 ways as a sum of consecutive naturals, for example, 2245264854 + ... + 2245264949.

Almost surely, 2^215545430544 is an apocalyptic number.

215545430544 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

215545430544 is an abundant number, since it is smaller than the sum of its proper divisors (341280265152).

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

215545430544 is a wasteful number, since it uses less digits than its factorization.

215545430544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4490529814 (or 4490529808 counting only the distinct ones).

The product of its (nonzero) digits is 960000, while the sum is 42.

The spelling of 215545430544 in words is "two hundred fifteen billion, five hundred forty-five million, four hundred thirty thousand, five hundred forty-four".