64112950544 has 80 divisors (see below), whose sum is σ = 133496812800. Its totient is φ = 29720451072.

The previous prime is 64112950537. The next prime is 64112950549. The reversal of 64112950544 is 44505921146.

It is a super-2 number, since 2×64112950544² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64112950549) 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, 10031702 + ... + 10038090.

It is an arithmetic number, because the mean of its divisors is an integer number (1668710160).

Almost surely, 2^64112950544 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 64112950544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66748406400).

64112950544 is an abundant number, since it is smaller than the sum of its proper divisors (69383862256).

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

64112950544 is a wasteful number, since it uses less digits than its factorization.

64112950544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6960 (or 6954 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 41.

The spelling of 64112950544 in words is "sixty-four billion, one hundred twelve million, nine hundred fifty thousand, five hundred forty-four".