68890789031 has 4 divisors (see below), whose sum is σ = 71886040752. Its totient is φ = 65895537312.

The previous prime is 68890789007. The next prime is 68890789049. The reversal of 68890789031 is 13098709886.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 68890789031 - 2³⁴ = 51710919847 is a prime.

It is a super-2 number, since 2×68890789031² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68890789531) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1497625826 + ... + 1497625871.

It is an arithmetic number, because the mean of its divisors is an integer number (17971510188).

Almost surely, 2^68890789031 is an apocalyptic number.

68890789031 is a deficient number, since it is larger than the sum of its proper divisors (2995251721).

68890789031 is a wasteful number, since it uses less digits than its factorization.

68890789031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2995251720.

The product of its (nonzero) digits is 5225472, while the sum is 59.

The spelling of 68890789031 in words is "sixty-eight billion, eight hundred ninety million, seven hundred eighty-nine thousand, thirty-one".