278230978972 has 6 divisors (see below), whose sum is σ = 486904213208. Its totient is φ = 139115489484.

The previous prime is 278230978957. The next prime is 278230978979. The reversal of 278230978972 is 279879032872.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (278230978979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34778872368 + ... + 34778872375.

Almost surely, 2^278230978972 is an apocalyptic number.

It is an amenable number.

278230978972 is a deficient number, since it is larger than the sum of its proper divisors (208673234236).

278230978972 is a wasteful number, since it uses less digits than its factorization.

278230978972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69557744747 (or 69557744745 counting only the distinct ones).

The product of its (nonzero) digits is 42674688, while the sum is 64.

The spelling of 278230978972 in words is "two hundred seventy-eight billion, two hundred thirty million, nine hundred seventy-eight thousand, nine hundred seventy-two".