280727849664 has 42 divisors (see below), whose sum is σ = 804655695740. Its totient is φ = 93575949696.

The previous prime is 280727849653. The next prime is 280727849683. The reversal of 280727849664 is 466948727082.

280727849664 is a `hidden beast` number, since 2 + 8 + 0 + 72 + 78 + 496 + 6 + 4 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 243686794 + ... + 243687945.

Almost surely, 2^280727849664 is an apocalyptic number.

280727849664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

280727849664 is an abundant number, since it is smaller than the sum of its proper divisors (523927846076).

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

280727849664 is a wasteful number, since it uses less digits than its factorization.

280727849664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487374757 (or 487374744 counting only the distinct ones).

The product of its (nonzero) digits is 65028096, while the sum is 63.

The spelling of 280727849664 in words is "two hundred eighty billion, seven hundred twenty-seven million, eight hundred forty-nine thousand, six hundred sixty-four".