64120757120 has 192 divisors, whose sum is σ = 184070309760. Its totient is φ = 21274767360.

The previous prime is 64120757111. The next prime is 64120757147. The reversal of 64120757120 is 2175702146.

It is a super-2 number, since 2×64120757120² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 939182 + ... + 1005138.

It is an arithmetic number, because the mean of its divisors is an integer number (958699530).

Almost surely, 2^64120757120 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64120757120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92035154880).

64120757120 is an abundant number, since it is smaller than the sum of its proper divisors (119949552640).

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

64120757120 is a wasteful number, since it uses less digits than its factorization.

64120757120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66021 (or 66002 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 35.

The spelling of 64120757120 in words is "sixty-four billion, one hundred twenty million, seven hundred fifty-seven thousand, one hundred twenty".