64523494574016 has 112 divisors (see below), whose sum is σ = 173277020065536. Its totient is φ = 21185526472704.

The previous prime is 64523494573981. The next prime is 64523494574029. The reversal of 64523494574016 is 61047549432546.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 223393405 + ... + 223682051.

Almost surely, 2^{64523494574016} 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 64523494574016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86638510032768).

64523494574016 is an abundant number, since it is smaller than the sum of its proper divisors (108753525491520).

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

64523494574016 is a wasteful number, since it uses less digits than its factorization.

64523494574016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306106 (or 306096 counting only the distinct ones).

The product of its (nonzero) digits is 87091200, while the sum is 60.

The spelling of 64523494574016 in words is "sixty-four trillion, five hundred twenty-three billion, four hundred ninety-four million, five hundred seventy-four thousand, sixteen".