278091672842 has 16 divisors (see below), whose sum is σ = 419474764800. Its totient is φ = 138266871120.

The previous prime is 278091672811. The next prime is 278091672919. The reversal of 278091672842 is 248276190872.

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, 6755759 + ... + 6796797.

It is an arithmetic number, because the mean of its divisors is an integer number (26217172800).

Almost surely, 2^278091672842 is an apocalyptic number.

278091672842 is a deficient number, since it is larger than the sum of its proper divisors (141383091958).

278091672842 is a wasteful number, since it uses less digits than its factorization.

278091672842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59941.

The product of its (nonzero) digits is 5419008, while the sum is 56.

The spelling of 278091672842 in words is "two hundred seventy-eight billion, ninety-one million, six hundred seventy-two thousand, eight hundred forty-two".