68663961630 has 80 divisors (see below), whose sum is σ = 201414313584. Its totient is φ = 16645806720.

The previous prime is 68663961617. The next prime is 68663961679. The reversal of 68663961630 is 3616936686.

It is a super-2 number, since 2×68663961630² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3844287 + ... + 3862106.

Almost surely, 2^68663961630 is an apocalyptic number.

68663961630 is an abundant number, since it is smaller than the sum of its proper divisors (132750351954).

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

68663961630 is a wasteful number, since it uses less digits than its factorization.

68663961630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7706423 (or 7706414 counting only the distinct ones).

The product of its (nonzero) digits is 5038848, while the sum is 54.

The spelling of 68663961630 in words is "sixty-eight billion, six hundred sixty-three million, nine hundred sixty-one thousand, six hundred thirty".