64392964836480 has 1536 divisors, whose sum is σ = 268241186304000. Its totient is φ = 14213407703040.

The previous prime is 64392964836427. The next prime is 64392964836491. The reversal of 64392964836480 is 8463846929346.

64392964836480 is a `hidden beast` number, since 6 + 4 + 3 + 9 + 2 + 9 + 6 + 483 + 64 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a junction number, because it is equal to n+sod(n) for n = 64392964836399 and 64392964836408.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 41463595384 + ... + 41463596936.

It is an arithmetic number, because the mean of its divisors is an integer number (174636189000).

Almost surely, 2^{64392964836480} is an apocalyptic number.

64392964836480 is a gapful number since it is divisible by the number (60) 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 64392964836480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134120593152000).

64392964836480 is an abundant number, since it is smaller than the sum of its proper divisors (203848221467520).

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

64392964836480 is a wasteful number, since it uses less digits than its factorization.

64392964836480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2307 (or 2278 counting only the distinct ones).

The product of its (nonzero) digits is 1289945088, while the sum is 72.

The spelling of 64392964836480 in words is "sixty-four trillion, three hundred ninety-two billion, nine hundred sixty-four million, eight hundred thirty-six thousand, four hundred eighty".