68231775901 has 4 divisors (see below), whose sum is σ = 68294547712. Its totient is φ = 68169004092.

The previous prime is 68231775893. The next prime is 68231775929. The reversal of 68231775901 is 10957713286.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 68231775901 - 2³ = 68231775893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68231775991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31384275 + ... + 31386448.

It is an arithmetic number, because the mean of its divisors is an integer number (17073636928).

Almost surely, 2^68231775901 is an apocalyptic number.

It is an amenable number.

68231775901 is a deficient number, since it is larger than the sum of its proper divisors (62771811).

68231775901 is a wasteful number, since it uses less digits than its factorization.

68231775901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62771810.

The product of its (nonzero) digits is 635040, while the sum is 49.

The spelling of 68231775901 in words is "sixty-eight billion, two hundred thirty-one million, seven hundred seventy-five thousand, nine hundred one".