68172405630 has 32 divisors (see below), whose sum is σ = 186987170304. Its totient is φ = 15582264096.

The previous prime is 68172405611. The next prime is 68172405647. The reversal of 68172405630 is 3650427186.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

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, 162315042 + ... + 162315461.

It is an arithmetic number, because the mean of its divisors is an integer number (5843349072).

Almost surely, 2^68172405630 is an apocalyptic number.

68172405630 is an abundant number, since it is smaller than the sum of its proper divisors (118814764674).

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

68172405630 is a wasteful number, since it uses less digits than its factorization.

68172405630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324630520.

The product of its (nonzero) digits is 241920, while the sum is 42.

The spelling of 68172405630 in words is "sixty-eight billion, one hundred seventy-two million, four hundred five thousand, six hundred thirty".