64116798312 has 192 divisors, whose sum is σ = 188050040640. Its totient is φ = 18163891200.

The previous prime is 64116798311. The next prime is 64116798331. The reversal of 64116798312 is 21389761146.

It is a super-2 number, since 2×64116798312² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64116798311) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 123064612 + ... + 123065132.

It is an arithmetic number, because the mean of its divisors is an integer number (979427295).

Almost surely, 2^64116798312 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 64116798312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94025020320).

64116798312 is an abundant number, since it is smaller than the sum of its proper divisors (123933242328).

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

64116798312 is a wasteful number, since it uses less digits than its factorization.

64116798312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1232 (or 1221 counting only the distinct ones).

The product of its digits is 435456, while the sum is 48.

The spelling of 64116798312 in words is "sixty-four billion, one hundred sixteen million, seven hundred ninety-eight thousand, three hundred twelve".