64520515046 has 32 divisors (see below), whose sum is σ = 105120892800. Its totient is φ = 29523957120.

The previous prime is 64520515043. The next prime is 64520515057. The reversal of 64520515046 is 64051502546.

It is a super-2 number, since 2×64520515046² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64520515043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1400336 + ... + 1445676.

It is an arithmetic number, because the mean of its divisors is an integer number (3285027900).

Almost surely, 2^64520515046 is an apocalyptic number.

64520515046 is a deficient number, since it is larger than the sum of its proper divisors (40600377754).

64520515046 is a wasteful number, since it uses less digits than its factorization.

64520515046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45824.

The product of its (nonzero) digits is 144000, while the sum is 38.

The spelling of 64520515046 in words is "sixty-four billion, five hundred twenty million, five hundred fifteen thousand, forty-six".