64520083099 has 4 divisors (see below), whose sum is σ = 64771134264. Its totient is φ = 64269031936.

The previous prime is 64520083091. The next prime is 64520083183. The reversal of 64520083099 is 99038002546.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 64520083099 - 2³ = 64520083091 is a prime.

It is a super-2 number, since 2×64520083099² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64520083091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125525197 + ... + 125525710.

It is an arithmetic number, because the mean of its divisors is an integer number (16192783566).

Almost surely, 2^64520083099 is an apocalyptic number.

64520083099 is a deficient number, since it is larger than the sum of its proper divisors (251051165).

64520083099 is a wasteful number, since it uses less digits than its factorization.

64520083099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251051164.

The product of its (nonzero) digits is 466560, while the sum is 46.

The spelling of 64520083099 in words is "sixty-four billion, five hundred twenty million, eighty-three thousand, ninety-nine".