663097231556 has 48 divisors (see below), whose sum is σ = 1203656509440. Its totient is φ = 319300800000.

The previous prime is 663097231547. The next prime is 663097231571. The reversal of 663097231556 is 655132790366.

It is a super-2 number, since 2×663097231556² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 663097231498 and 663097231507.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50997056 + ... + 51010056.

It is an arithmetic number, because the mean of its divisors is an integer number (25076177280).

Almost surely, 2^663097231556 is an apocalyptic number.

It is an amenable number.

663097231556 is a deficient number, since it is larger than the sum of its proper divisors (540559277884).

663097231556 is a wasteful number, since it uses less digits than its factorization.

663097231556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14996 (or 14994 counting only the distinct ones).

The product of its (nonzero) digits is 6123600, while the sum is 53.

The spelling of 663097231556 in words is "six hundred sixty-three billion, ninety-seven million, two hundred thirty-one thousand, five hundred fifty-six".