254677861854 has 80 divisors (see below), whose sum is σ = 615178742640. Its totient is φ = 78284102400.

The previous prime is 254677861843. The next prime is 254677861871. The reversal of 254677861854 is 458168776452.

254677861854 is a `hidden beast` number, since 2 + 5 + 4 + 6 + 7 + 7 + 8 + 618 + 5 + 4 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 254677861791 and 254677861800.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2065029 + ... + 2184879.

It is an arithmetic number, because the mean of its divisors is an integer number (7689734283).

Almost surely, 2^254677861854 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 254677861854, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (307589371320).

254677861854 is an abundant number, since it is smaller than the sum of its proper divisors (360500880786).

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

254677861854 is a wasteful number, since it uses less digits than its factorization.

254677861854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120887 (or 120878 counting only the distinct ones).

The product of its digits is 90316800, while the sum is 63.

The spelling of 254677861854 in words is "two hundred fifty-four billion, six hundred seventy-seven million, eight hundred sixty-one thousand, eight hundred fifty-four".