5177644686 has 32 divisors (see below), whose sum is σ = 11572405920. Its totient is φ = 1715902272.

The previous prime is 5177644649. The next prime is 5177644733. The reversal of 5177644686 is 6864467715.

5177644686 is a `hidden beast` number, since 5 + 177 + 6 + 4 + 468 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 267775 + ... + 286458.

It is an arithmetic number, because the mean of its divisors is an integer number (361637685).

Almost surely, 2^5177644686 is an apocalyptic number.

5177644686 is an abundant number, since it is smaller than the sum of its proper divisors (6394761234).

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

5177644686 is a wasteful number, since it uses less digits than its factorization.

5177644686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 554417 (or 554411 counting only the distinct ones).

The product of its digits is 6773760, while the sum is 54.

The square root of 5177644686 is about 71955.8523401676. The cubic root of 5177644686 is about 1729.9919460126.

The spelling of 5177644686 in words is "five billion, one hundred seventy-seven million, six hundred forty-four thousand, six hundred eighty-six".