278855265042 has 24 divisors (see below), whose sum is σ = 604443490560. Its totient is φ = 92912203800.

The previous prime is 278855265041. The next prime is 278855265107. The reversal of 278855265042 is 240562558872.

278855265042 is a `hidden beast` number, since 2 + 7 + 8 + 85 + 52 + 6 + 504 + 2 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 278855265042.

It is not an unprimeable number, because it can be changed into a prime (278855265041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3252442 + ... + 3337077.

It is an arithmetic number, because the mean of its divisors is an integer number (25185145440).

Almost surely, 2^278855265042 is an apocalyptic number.

278855265042 is an abundant number, since it is smaller than the sum of its proper divisors (325588225518).

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

278855265042 is a wasteful number, since it uses less digits than its factorization.

278855265042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6591878 (or 6591875 counting only the distinct ones).

The product of its (nonzero) digits is 10752000, while the sum is 54.

The spelling of 278855265042 in words is "two hundred seventy-eight billion, eight hundred fifty-five million, two hundred sixty-five thousand, forty-two".