979857854084 has 6 divisors (see below), whose sum is σ = 1714751244654. Its totient is φ = 489928927040.

The previous prime is 979857854069. The next prime is 979857854099. The reversal of 979857854084 is 480458758979.

It is an interprime number because it is at equal distance from previous prime (979857854069) and next prime (979857854099).

It can be written as a sum of positive squares in only one way, i.e., 641075651584 + 338782202500 = 800672^2 + 582050^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122482231757 + ... + 122482231764.

It is an arithmetic number, because the mean of its divisors is an integer number (285791874109).

Almost surely, 2^979857854084 is an apocalyptic number.

It is an amenable number.

979857854084 is a deficient number, since it is larger than the sum of its proper divisors (734893390570).

979857854084 is a wasteful number, since it uses less digits than its factorization.

979857854084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244964463525 (or 244964463523 counting only the distinct ones).

The product of its (nonzero) digits is 812851200, while the sum is 74.

The spelling of 979857854084 in words is "nine hundred seventy-nine billion, eight hundred fifty-seven million, eight hundred fifty-four thousand, eighty-four".