64959994941180 has 384 divisors, whose sum is σ = 194261639233536. Its totient is φ = 16192707148800.

The previous prime is 64959994941143. The next prime is 64959994941199. The reversal of 64959994941180 is 8114949995946.

It is a junction number, because it is equal to n+sod(n) for n = 64959994941096 and 64959994941105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 7930650885 + ... + 7930659075.

It is an arithmetic number, because the mean of its divisors is an integer number (505889685504).

Almost surely, 2^{64959994941180} is an apocalyptic number.

64959994941180 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 64959994941180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97130819616768).

64959994941180 is an abundant number, since it is smaller than the sum of its proper divisors (129301644292356).

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

64959994941180 is a wasteful number, since it uses less digits than its factorization.

64959994941180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9457 (or 9455 counting only the distinct ones).

The product of its (nonzero) digits is 906992640, while the sum is 78.

The spelling of 64959994941180 in words is "sixty-four trillion, nine hundred fifty-nine billion, nine hundred ninety-four million, nine hundred forty-one thousand, one hundred eighty".