64157023013244 has 192 divisors, whose sum is σ = 179621449728000. Its totient is φ = 17436284985600.

The previous prime is 64157023013243. The next prime is 64157023013249. The reversal of 64157023013244 is 44231032075146.

It is a super-2 number, since 2×64157023013244² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 64157023013196 and 64157023013205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64157023013243) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1378245282 + ... + 1378291830.

It is an arithmetic number, because the mean of its divisors is an integer number (935528384000).

Almost surely, 2^{64157023013244} 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 64157023013244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89810724864000).

64157023013244 is an abundant number, since it is smaller than the sum of its proper divisors (115464426714756).

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

64157023013244 is a wasteful number, since it uses less digits than its factorization.

64157023013244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55624 (or 55622 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 42.

The spelling of 64157023013244 in words is "sixty-four trillion, one hundred fifty-seven billion, twenty-three million, thirteen thousand, two hundred forty-four".