68280473720 has 32 divisors (see below), whose sum is σ = 153821041200. Its totient is φ = 27278416128.

The previous prime is 68280473623. The next prime is 68280473743. The reversal of 68280473720 is 2737408286.

It is a super-2 number, since 2×68280473720² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1022654 + ... + 1087373.

Almost surely, 2^68280473720 is an apocalyptic number.

It is an amenable number.

68280473720 is an abundant number, since it is smaller than the sum of its proper divisors (85540567480).

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

68280473720 is a wasteful number, since it uses less digits than its factorization.

68280473720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2110847 (or 2110843 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 47.

The spelling of 68280473720 in words is "sixty-eight billion, two hundred eighty million, four hundred seventy-three thousand, seven hundred twenty".