68578909772 has 24 divisors (see below), whose sum is σ = 128500480080. Its totient is φ = 31909813760.

The previous prime is 68578909771. The next prime is 68578909801. The reversal of 68578909772 is 27790987586.

It is a super-2 number, since 2×68578909772² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (68).

It is not an unprimeable number, because it can be changed into a prime (68578909771) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5659754 + ... + 5671857.

It is an arithmetic number, because the mean of its divisors is an integer number (5354186670).

Almost surely, 2^68578909772 is an apocalyptic number.

It is an amenable number.

68578909772 is a deficient number, since it is larger than the sum of its proper divisors (59921570308).

68578909772 is a wasteful number, since it uses less digits than its factorization.

68578909772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11331721 (or 11331719 counting only the distinct ones).

The product of its (nonzero) digits is 106686720, while the sum is 68.

The spelling of 68578909772 in words is "sixty-eight billion, five hundred seventy-eight million, nine hundred nine thousand, seven hundred seventy-two".