71392978929 has 32 divisors (see below), whose sum is σ = 98029854720. Its totient is φ = 46188560000.

The previous prime is 71392978919. The next prime is 71392978931. The reversal of 71392978929 is 92987929317.

It is a cyclic number.

It is not a de Polignac number, because 71392978929 - 2⁹ = 71392978417 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 71392978929.

It is not an unprimeable number, because it can be changed into a prime (71392978919) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44425444 + ... + 44427050.

It is an arithmetic number, because the mean of its divisors is an integer number (3063432960).

Almost surely, 2^71392978929 is an apocalyptic number.

It is an amenable number.

71392978929 is a deficient number, since it is larger than the sum of its proper divisors (26636875791).

71392978929 is a wasteful number, since it uses less digits than its factorization.

71392978929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3341.

The product of its digits is 30862944, while the sum is 66.

The spelling of 71392978929 in words is "seventy-one billion, three hundred ninety-two million, nine hundred seventy-eight thousand, nine hundred twenty-nine".