64179476847 has 16 divisors (see below), whose sum is σ = 96226260480. Its totient is φ = 42270818616.

The previous prime is 64179476843. The next prime is 64179476849. The reversal of 64179476847 is 74867497146.

It is not a de Polignac number, because 64179476847 - 2² = 64179476843 is a prime.

It is a super-2 number, since 2×64179476847² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64179476843) 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, 14317143 + ... + 14321624.

It is an arithmetic number, because the mean of its divisors is an integer number (6014141280).

Almost surely, 2^64179476847 is an apocalyptic number.

64179476847 is a deficient number, since it is larger than the sum of its proper divisors (32046783633).

64179476847 is a wasteful number, since it uses less digits than its factorization.

64179476847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28638859 (or 28638853 counting only the distinct ones).

The product of its digits is 56899584, while the sum is 63.

The spelling of 64179476847 in words is "sixty-four billion, one hundred seventy-nine million, four hundred seventy-six thousand, eight hundred forty-seven".