278679086942 has 16 divisors (see below), whose sum is σ = 424906418832. Its totient is φ = 137043990720.

The previous prime is 278679086927. The next prime is 278679086969. The reversal of 278679086942 is 249680976872.

It is a super-2 number, since 2×278679086942² (a number of 24 digits) contains 22 as substring.

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, 1502393 + ... + 1677659.

It is an arithmetic number, because the mean of its divisors is an integer number (26556651177).

Almost surely, 2^278679086942 is an apocalyptic number.

278679086942 is a deficient number, since it is larger than the sum of its proper divisors (146227331890).

278679086942 is a wasteful number, since it uses less digits than its factorization.

278679086942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188363.

The product of its (nonzero) digits is 146313216, while the sum is 68.

The spelling of 278679086942 in words is "two hundred seventy-eight billion, six hundred seventy-nine million, eighty-six thousand, nine hundred forty-two".