663799107672 has 160 divisors (see below), whose sum is σ = 1864932973200. Its totient is φ = 220591641600.

The previous prime is 663799107649. The next prime is 663799107677. The reversal of 663799107672 is 276701997366.

It is a super-2 number, since 2×663799107672² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663799107677) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 502496772 + ... + 502498092.

Almost surely, 2^663799107672 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 663799107672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (932466486600).

663799107672 is an abundant number, since it is smaller than the sum of its proper divisors (1201133865528).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

663799107672 is a wasteful number, since it uses less digits than its factorization.

663799107672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3119 (or 3106 counting only the distinct ones).

The product of its (nonzero) digits is 36006768, while the sum is 63.

The spelling of 663799107672 in words is "six hundred sixty-three billion, seven hundred ninety-nine million, one hundred seven thousand, six hundred seventy-two".