71696635431 has 8 divisors (see below), whose sum is σ = 101218779504. Its totient is φ = 44986124160.

The previous prime is 71696635427. The next prime is 71696635433. The reversal of 71696635431 is 13453669617.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 71696635431 - 2² = 71696635427 is a prime.

It is a super-2 number, since 2×71696635431² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51), and also a Moran number because the ratio is a prime number: 1405816381 = 71696635431 / (7 + 1 + 6 + 9 + 6 + 6 + 3 + 5 + 4 + 3 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71696635433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 702908140 + ... + 702908241.

It is an arithmetic number, because the mean of its divisors is an integer number (12652347438).

Almost surely, 2^71696635431 is an apocalyptic number.

71696635431 is a deficient number, since it is larger than the sum of its proper divisors (29522144073).

71696635431 is a wasteful number, since it uses less digits than its factorization.

71696635431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1405816401.

The product of its digits is 2449440, while the sum is 51.

The spelling of 71696635431 in words is "seventy-one billion, six hundred ninety-six million, six hundred thirty-five thousand, four hundred thirty-one".