71900764679 has 4 divisors (see below), whose sum is σ = 71961339384. Its totient is φ = 71840189976.

The previous prime is 71900764651. The next prime is 71900764757. The reversal of 71900764679 is 97646700917.

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 71900764679 - 2²⁴ = 71883987463 is a prime.

It is a super-2 number, since 2×71900764679² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71900764279) 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 3 ways as a sum of consecutive naturals, for example, 30285572 + ... + 30287945.

It is an arithmetic number, because the mean of its divisors is an integer number (17990334846).

Almost surely, 2^71900764679 is an apocalyptic number.

71900764679 is a deficient number, since it is larger than the sum of its proper divisors (60574705).

71900764679 is a wasteful number, since it uses less digits than its factorization.

71900764679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60574704.

The product of its (nonzero) digits is 4000752, while the sum is 56.

The spelling of 71900764679 in words is "seventy-one billion, nine hundred million, seven hundred sixty-four thousand, six hundred seventy-nine".