84980976657 has 4 divisors (see below), whose sum is σ = 113307968880. Its totient is φ = 56653984436.

The previous prime is 84980976631. The next prime is 84980976667. The reversal of 84980976657 is 75667908948.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 84980976657 - 2⁶ = 84980976593 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 84980976591 and 84980976600.

It is not an unprimeable number, because it can be changed into a prime (84980976667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14163496107 + ... + 14163496112.

It is an arithmetic number, because the mean of its divisors is an integer number (28326992220).

Almost surely, 2^84980976657 is an apocalyptic number.

It is an amenable number.

84980976657 is a deficient number, since it is larger than the sum of its proper divisors (28326992223).

84980976657 is a wasteful number, since it uses less digits than its factorization.

84980976657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28326992222.

The product of its (nonzero) digits is 182891520, while the sum is 69.

The spelling of 84980976657 in words is "eighty-four billion, nine hundred eighty million, nine hundred seventy-six thousand, six hundred fifty-seven".