68231779336 has 16 divisors (see below), whose sum is σ = 146210955840. Its totient is φ = 29242191120.

The previous prime is 68231779327. The next prime is 68231779349. The reversal of 68231779336 is 63397713286.

68231779336 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×68231779336² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 609212260 + ... + 609212371.

It is an arithmetic number, because the mean of its divisors is an integer number (9138184740).

Almost surely, 2^68231779336 is an apocalyptic number.

It is an amenable number.

68231779336 is an abundant number, since it is smaller than the sum of its proper divisors (77979176504).

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

68231779336 is a wasteful number, since it uses less digits than its factorization.

68231779336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1218424644 (or 1218424640 counting only the distinct ones).

The product of its digits is 6858432, while the sum is 55.

The spelling of 68231779336 in words is "sixty-eight billion, two hundred thirty-one million, seven hundred seventy-nine thousand, three hundred thirty-six".