64673632524 has 96 divisors (see below), whose sum is σ = 162074626560. Its totient is φ = 20010931200.

The previous prime is 64673632523. The next prime is 64673632531. The reversal of 64673632524 is 42523637646.

It is a super-2 number, since 2×64673632524² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64673632523) 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 31 ways as a sum of consecutive naturals, for example, 3648964 + ... + 3666644.

It is an arithmetic number, because the mean of its divisors is an integer number (1688277360).

Almost surely, 2^64673632524 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 64673632524, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81037313280).

64673632524 is an abundant number, since it is smaller than the sum of its proper divisors (97400994036).

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

64673632524 is a wasteful number, since it uses less digits than its factorization.

64673632524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18031 (or 18029 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 48.

The spelling of 64673632524 in words is "sixty-four billion, six hundred seventy-three million, six hundred thirty-two thousand, five hundred twenty-four".