855374899278 has 32 divisors (see below), whose sum is σ = 1770025996800. Its totient is φ = 275248764896.

The previous prime is 855374899271. The next prime is 855374899283. The reversal of 855374899278 is 872998473558.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855374899271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 697303 + ... + 1482221.

It is an arithmetic number, because the mean of its divisors is an integer number (55313312400).

Almost surely, 2^855374899278 is an apocalyptic number.

855374899278 is an abundant number, since it is smaller than the sum of its proper divisors (914651097522).

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

855374899278 is a wasteful number, since it uses less digits than its factorization.

855374899278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 791216.

The product of its digits is 1219276800, while the sum is 75.

The spelling of 855374899278 in words is "eight hundred fifty-five billion, three hundred seventy-four million, eight hundred ninety-nine thousand, two hundred seventy-eight".