64502553552 has 160 divisors (see below), whose sum is σ = 180603940608. Its totient is φ = 19763232768.

The previous prime is 64502553547. The next prime is 64502553581. The reversal of 64502553552 is 25535520546.

64502553552 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-4 number, since 4×64502553552⁴ (a number of 44 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6130248 + ... + 6140760.

Almost surely, 2^64502553552 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 64502553552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90301970304).

64502553552 is an abundant number, since it is smaller than the sum of its proper divisors (116101387056).

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

64502553552 is a wasteful number, since it uses less digits than its factorization.

64502553552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10717 (or 10711 counting only the distinct ones).

The product of its (nonzero) digits is 900000, while the sum is 42.

The spelling of 64502553552 in words is "sixty-four billion, five hundred two million, five hundred fifty-three thousand, five hundred fifty-two".