64523463732 has 480 divisors, whose sum is σ = 213676227072. Its totient is φ = 16526674944.

The previous prime is 64523463727. The next prime is 64523463733. The reversal of 64523463732 is 23736432546.

64523463732 is a `hidden beast` number, since 6 + 4 + 5 + 2 + 3 + 4 + 637 + 3 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64523463733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 245336233 + ... + 245336495.

Almost surely, 2^64523463732 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 64523463732, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106838113536).

64523463732 is an abundant number, since it is smaller than the sum of its proper divisors (149152763340).

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

64523463732 is a wasteful number, since it uses less digits than its factorization.

64523463732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509 (or 498 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 45.

The spelling of 64523463732 in words is "sixty-four billion, five hundred twenty-three million, four hundred sixty-three thousand, seven hundred thirty-two".