68553232431 has 16 divisors (see below), whose sum is σ = 91629457920. Its totient is φ = 45589642560.

The previous prime is 68553232427. The next prime is 68553232453. The reversal of 68553232431 is 13423235586.

It is not a de Polignac number, because 68553232431 - 2² = 68553232427 is a prime.

It is a super-2 number, since 2×68553232431² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68553232421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6844155 + ... + 6854163.

It is an arithmetic number, because the mean of its divisors is an integer number (5726841120).

Almost surely, 2^68553232431 is an apocalyptic number.

68553232431 is a deficient number, since it is larger than the sum of its proper divisors (23076225489).

68553232431 is a wasteful number, since it uses less digits than its factorization.

68553232431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15406.

The product of its digits is 518400, while the sum is 42.

The spelling of 68553232431 in words is "sixty-eight billion, five hundred fifty-three million, two hundred thirty-two thousand, four hundred thirty-one".