278678432248 has 32 divisors (see below), whose sum is σ = 564041815200. Its totient is φ = 128685090688.

The previous prime is 278678432237. The next prime is 278678432251. The reversal of 278678432248 is 842234876872.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26107711 + ... + 26118382.

It is an arithmetic number, because the mean of its divisors is an integer number (17626306725).

Almost surely, 2^278678432248 is an apocalyptic number.

It is an amenable number.

278678432248 is an abundant number, since it is smaller than the sum of its proper divisors (285363382952).

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

278678432248 is a wasteful number, since it uses less digits than its factorization.

278678432248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52226151 (or 52226147 counting only the distinct ones).

The product of its digits is 57802752, while the sum is 61.

The spelling of 278678432248 in words is "two hundred seventy-eight billion, six hundred seventy-eight million, four hundred thirty-two thousand, two hundred forty-eight".