64536520510 has 64 divisors (see below), whose sum is σ = 145037827584. Its totient is φ = 20086416000.

The previous prime is 64536520439. The next prime is 64536520513. The reversal of 64536520510 is 1502563546.

It is a self number, because there is not a number n which added to its sum of digits gives 64536520510.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64536520513) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 479989 + ... + 599551.

It is an arithmetic number, because the mean of its divisors is an integer number (2266216056).

Almost surely, 2^64536520510 is an apocalyptic number.

64536520510 is an abundant number, since it is smaller than the sum of its proper divisors (80501307074).

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

64536520510 is a wasteful number, since it uses less digits than its factorization.

64536520510 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120289.

The product of its (nonzero) digits is 108000, while the sum is 37.

The spelling of 64536520510 in words is "sixty-four billion, five hundred thirty-six million, five hundred twenty thousand, five hundred ten".