68814899712 has 120 divisors (see below), whose sum is σ = 213881912244. Its totient is φ = 21173796864.

The previous prime is 68814899689. The next prime is 68814899717. The reversal of 68814899712 is 21799841886.

68814899712 is a `hidden beast` number, since 6 + 8 + 81 + 489 + 9 + 71 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 67508510976 + 1306388736 = 259824^2 + 36144^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 68814899712.

It is not an unprimeable number, because it can be changed into a prime (68814899717) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 514473 + ... + 634280.

Almost surely, 2^68814899712 is an apocalyptic number.

It is an amenable number.

68814899712 is an abundant number, since it is smaller than the sum of its proper divisors (145067012532).

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

68814899712 is a wasteful number, since it uses less digits than its factorization.

68814899712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1148790 (or 1148771 counting only the distinct ones).

The product of its digits is 13934592, while the sum is 63.

The spelling of 68814899712 in words is "sixty-eight billion, eight hundred fourteen million, eight hundred ninety-nine thousand, seven hundred twelve".