663520075031 has 8 divisors (see below), whose sum is σ = 726511081728. Its totient is φ = 600974235000.

The previous prime is 663520075027. The next prime is 663520075039. The reversal of 663520075031 is 130570025366.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 663520075031 - 2² = 663520075027 is a prime.

It is a super-2 number, since 2×663520075031² (a number of 24 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 (663520075039) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111288545 + ... + 111294506.

It is an arithmetic number, because the mean of its divisors is an integer number (90813885216).

Almost surely, 2^663520075031 is an apocalyptic number.

663520075031 is a deficient number, since it is larger than the sum of its proper divisors (62991006697).

663520075031 is a wasteful number, since it uses less digits than its factorization.

663520075031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222583333.

The product of its (nonzero) digits is 113400, while the sum is 38.

The spelling of 663520075031 in words is "six hundred sixty-three billion, five hundred twenty million, seventy-five thousand, thirty-one".