64476667904 has 168 divisors, whose sum is σ = 146686173480. Its totient is φ = 28284354560.

The previous prime is 64476667889. The next prime is 64476667919. The reversal of 64476667904 is 40976667446.

It is an interprime number because it is at equal distance from previous prime (64476667889) and next prime (64476667919).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28744607 + ... + 28746849.

It is an arithmetic number, because the mean of its divisors is an integer number (873131985).

Almost surely, 2^64476667904 is an apocalyptic number.

64476667904 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64476667904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73343086740).

64476667904 is an abundant number, since it is smaller than the sum of its proper divisors (82209505576).

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

64476667904 is a wasteful number, since it uses less digits than its factorization.

64476667904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2320 (or 2285 counting only the distinct ones).

The product of its (nonzero) digits is 36578304, while the sum is 59.

The spelling of 64476667904 in words is "sixty-four billion, four hundred seventy-six million, six hundred sixty-seven thousand, nine hundred four".