68775778632 has 32 divisors (see below), whose sum is σ = 187570306080. Its totient is φ = 20841144960.

The previous prime is 68775778613. The next prime is 68775778661. The reversal of 68775778632 is 23687757786.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130256893 + ... + 130257420.

It is an arithmetic number, because the mean of its divisors is an integer number (5861572065).

Almost surely, 2^68775778632 is an apocalyptic number.

It is an amenable number.

68775778632 is an abundant number, since it is smaller than the sum of its proper divisors (118794527448).

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

68775778632 is a wasteful number, since it uses less digits than its factorization.

68775778632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260514333 (or 260514329 counting only the distinct ones).

The product of its digits is 165957120, while the sum is 66.

The spelling of 68775778632 in words is "sixty-eight billion, seven hundred seventy-five million, seven hundred seventy-eight thousand, six hundred thirty-two".