64115314788 has 240 divisors, whose sum is σ = 185046160320. Its totient is φ = 17228719872.

The previous prime is 64115314787. The next prime is 64115314789. The reversal of 64115314788 is 88741351146.

It is an interprime number because it is at equal distance from previous prime (64115314787) and next prime (64115314789).

It is a super-2 number, since 2×64115314788² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64115314787) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 94704706 + ... + 94705382.

It is an arithmetic number, because the mean of its divisors is an integer number (771025668).

Almost surely, 2^64115314788 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 64115314788, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92523080160).

64115314788 is an abundant number, since it is smaller than the sum of its proper divisors (120930845532).

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

64115314788 is a wasteful number, since it uses less digits than its factorization.

64115314788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 904 (or 881 counting only the distinct ones).

The product of its digits is 645120, while the sum is 48.

The spelling of 64115314788 in words is "sixty-four billion, one hundred fifteen million, three hundred fourteen thousand, seven hundred eighty-eight".