64520040501 has 12 divisors (see below), whose sum is σ = 106509273312. Its totient is φ = 36868594536.

The previous prime is 64520040479. The next prime is 64520040569. The reversal of 64520040501 is 10504002546.

It is not a de Polignac number, because 64520040501 - 2¹⁸ = 64519778357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64520041501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 512063751 + ... + 512063876.

It is an arithmetic number, because the mean of its divisors is an integer number (8875772776).

Almost surely, 2^64520040501 is an apocalyptic number.

It is an amenable number.

64520040501 is a deficient number, since it is larger than the sum of its proper divisors (41989232811).

64520040501 is a wasteful number, since it uses less digits than its factorization.

64520040501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1024127640 (or 1024127637 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The spelling of 64520040501 in words is "sixty-four billion, five hundred twenty million, forty thousand, five hundred one".