68771427431 has 6 divisors (see below), whose sum is σ = 79999415640. Its totient is φ = 58946937756.

The previous prime is 68771427397. The next prime is 68771427463. The reversal of 68771427431 is 13472417786.

It is not a de Polignac number, because 68771427431 - 2²² = 68767233127 is a prime.

It is a super-2 number, since 2×68771427431² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68771427431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68771421431) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 701749211 + ... + 701749308.

It is an arithmetic number, because the mean of its divisors is an integer number (13333235940).

Almost surely, 2^68771427431 is an apocalyptic number.

68771427431 is a deficient number, since it is larger than the sum of its proper divisors (11227988209).

68771427431 is a wasteful number, since it uses less digits than its factorization.

68771427431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1403498533 (or 1403498526 counting only the distinct ones).

The product of its digits is 1580544, while the sum is 50.

The spelling of 68771427431 in words is "sixty-eight billion, seven hundred seventy-one million, four hundred twenty-seven thousand, four hundred thirty-one".