71976673749 has 4 divisors (see below), whose sum is σ = 95968898336. Its totient is φ = 47984449164.

The previous prime is 71976673729. The next prime is 71976673781. The reversal of 71976673749 is 94737667917.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 71976673749 - 2⁷ = 71976673621 is a prime.

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 71976673749.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71976673709) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11996112289 + ... + 11996112294.

It is an arithmetic number, because the mean of its divisors is an integer number (23992224584).

Almost surely, 2^71976673749 is an apocalyptic number.

It is an amenable number.

71976673749 is a deficient number, since it is larger than the sum of its proper divisors (23992224587).

71976673749 is a wasteful number, since it uses less digits than its factorization.

71976673749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23992224586.

The product of its digits is 84015792, while the sum is 66.

The spelling of 71976673749 in words is "seventy-one billion, nine hundred seventy-six million, six hundred seventy-three thousand, seven hundred forty-nine".