64157122752 has 112 divisors (see below), whose sum is σ = 174069756000. Its totient is φ = 20842455040.

The previous prime is 64157122751. The next prime is 64157122753. The reversal of 64157122752 is 25722175146.

It is an interprime number because it is at equal distance from previous prime (64157122751) and next prime (64157122753).

It is a super-2 number, since 2×64157122752² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64157122751) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8726374 + ... + 8733722.

It is an arithmetic number, because the mean of its divisors is an integer number (1554194250).

Almost surely, 2^64157122752 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 64157122752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87034878000).

64157122752 is an abundant number, since it is smaller than the sum of its proper divisors (109912633248).

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

64157122752 is a wasteful number, since it uses less digits than its factorization.

64157122752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8514 (or 8504 counting only the distinct ones).

The product of its digits is 235200, while the sum is 42.

Adding to 64157122752 its reverse (25722175146), we get a palindrome (89879297898).

The spelling of 64157122752 in words is "sixty-four billion, one hundred fifty-seven million, one hundred twenty-two thousand, seven hundred fifty-two".