64810754019960 has 128 divisors (see below), whose sum is σ = 220409042112000. Its totient is φ = 15113762873856.

The previous prime is 64810754019937. The next prime is 64810754019967. The reversal of 64810754019960 is 6991045701846.

It is a super-2 number, since 2×64810754019960² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a junction number, because it is equal to n+sod(n) for n = 64810754019894 and 64810754019903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64810754019967) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1093269180 + ... + 1093328459.

It is an arithmetic number, because the mean of its divisors is an integer number (1721945641500).

Almost surely, 2^{64810754019960} is an apocalyptic number.

64810754019960 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

64810754019960 is an abundant number, since it is smaller than the sum of its proper divisors (155598288092040).

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

64810754019960 is a wasteful number, since it uses less digits than its factorization.

64810754019960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2186597685 (or 2186597681 counting only the distinct ones).

The product of its (nonzero) digits is 13063680, while the sum is 60.

The spelling of 64810754019960 in words is "sixty-four trillion, eight hundred ten billion, seven hundred fifty-four million, nineteen thousand, nine hundred sixty".