64802988432 has 720 divisors, whose sum is σ = 249029529840. Its totient is φ = 15520038912.

The previous prime is 64802988421. The next prime is 64802988511. The reversal of 64802988432 is 23488920846.

It can be written as a sum of positive squares in 8 ways, for example, as 1341317376 + 63461671056 = 36624^2 + 251916^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 45221188 + ... + 45222620.

It is an arithmetic number, because the mean of its divisors is an integer number (345874347).

Almost surely, 2^64802988432 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 64802988432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124514764920).

64802988432 is an abundant number, since it is smaller than the sum of its proper divisors (184226541408).

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

64802988432 is a wasteful number, since it uses less digits than its factorization.

64802988432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1520 (or 1504 counting only the distinct ones).

The product of its (nonzero) digits is 5308416, while the sum is 54.

It can be divided in two parts, 64802988 and 432, that added together give a triangular number (64803420 = T₁₁₃₈₄).

The spelling of 64802988432 in words is "sixty-four billion, eight hundred two million, nine hundred eighty-eight thousand, four hundred thirty-two".