664130088799501 has 4 divisors (see below), whose sum is σ = 664130751344892. Its totient is φ = 664129426254112.

The previous prime is 664130088799469. The next prime is 664130088799531. The reversal of 664130088799501 is 105997880031466.

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

It can be written as a sum of positive squares in 2 ways, for example, as 47861131494276 + 616268957305225 = 6918174^2 + 24824765^2 .

It is a cyclic number.

It is not a de Polignac number, because 664130088799501 - 2⁵ = 664130088799469 is a prime.

It is a super-2 number, since 2×664130088799501² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664130088799531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 329766826 + ... + 331774651.

It is an arithmetic number, because the mean of its divisors is an integer number (166032687836223).

Almost surely, 2^{664130088799501} is an apocalyptic number.

It is an amenable number.

664130088799501 is a deficient number, since it is larger than the sum of its proper divisors (662545391).

664130088799501 is a wasteful number, since it uses less digits than its factorization.

664130088799501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 662545390.

The product of its (nonzero) digits is 78382080, while the sum is 67.

The spelling of 664130088799501 in words is "six hundred sixty-four trillion, one hundred thirty billion, eighty-eight million, seven hundred ninety-nine thousand, five hundred one".