64664607050 has 24 divisors (see below), whose sum is σ = 120512515500. Its totient is φ = 25815015680.

The previous prime is 64664607031. The next prime is 64664607061. The reversal of 64664607050 is 5070646646.

It can be written as a sum of positive squares in 6 ways, for example, as 42893309449 + 21771297601 = 207107^2 + 147551^2 .

It is a super-2 number, since 2×64664607050² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 64664606992 and 64664607010.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 1244975 + ... + 1295874.

Almost surely, 2^64664607050 is an apocalyptic number.

64664607050 is a deficient number, since it is larger than the sum of its proper divisors (55847908450).

64664607050 is a wasteful number, since it uses less digits than its factorization.

64664607050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2541370 (or 2541365 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 44.

The spelling of 64664607050 in words is "sixty-four billion, six hundred sixty-four million, six hundred seven thousand, fifty".