68285632320 has 84 divisors (see below), whose sum is σ = 234874132740. Its totient is φ = 18209501184.

The previous prime is 68285632309. The next prime is 68285632343. The reversal of 68285632320 is 2323658286.

68285632320 is a `hidden beast` number, since 6 + 8 + 2 + 8 + 5 + 632 + 3 + 2 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 9096581376 + 59189050944 = 95376^2 + 243288^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11852265 + ... + 11858024.

Almost surely, 2^68285632320 is an apocalyptic number.

68285632320 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68285632320 is an abundant number, since it is smaller than the sum of its proper divisors (166588500420).

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

68285632320 is a wasteful number, since it uses less digits than its factorization.

68285632320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23710312 (or 23710299 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 45.

The spelling of 68285632320 in words is "sixty-eight billion, two hundred eighty-five million, six hundred thirty-two thousand, three hundred twenty".