64514151944 has 32 divisors (see below), whose sum is σ = 137698194240. Its totient is φ = 28049630400.

The previous prime is 64514151943. The next prime is 64514151953. The reversal of 64514151944 is 44915141546.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 64514151895 and 64514151904.

It is not an unprimeable number, because it can be changed into a prime (64514151943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15935267 + ... + 15939314.

It is an arithmetic number, because the mean of its divisors is an integer number (4303068570).

Almost surely, 2^64514151944 is an apocalyptic number.

It is an amenable number.

64514151944 is an abundant number, since it is smaller than the sum of its proper divisors (73184042296).

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

64514151944 is a wasteful number, since it uses less digits than its factorization.

64514151944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31874621 (or 31874617 counting only the distinct ones).

The product of its digits is 345600, while the sum is 44.

The spelling of 64514151944 in words is "sixty-four billion, five hundred fourteen million, one hundred fifty-one thousand, nine hundred forty-four".