71612536351 has 4 divisors (see below), whose sum is σ = 74726124912. Its totient is φ = 68498947792.

The previous prime is 71612536349. The next prime is 71612536367. The reversal of 71612536351 is 15363521617.

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 71612536351 - 2¹ = 71612536349 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 (71612536651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1556794246 + ... + 1556794291.

It is an arithmetic number, because the mean of its divisors is an integer number (18681531228).

Almost surely, 2^71612536351 is an apocalyptic number.

71612536351 is a deficient number, since it is larger than the sum of its proper divisors (3113588561).

71612536351 is a wasteful number, since it uses less digits than its factorization.

71612536351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3113588560.

The product of its digits is 113400, while the sum is 40.

The spelling of 71612536351 in words is "seventy-one billion, six hundred twelve million, five hundred thirty-six thousand, three hundred fifty-one".