71794516813 has 4 divisors (see below), whose sum is σ = 74916017568. Its totient is φ = 68673016060.

The previous prime is 71794516771. The next prime is 71794516831. The reversal of 71794516813 is 31861549717.

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, and also an emirpimes, since its reverse is a distinct semiprime: 31861549717 = 1979 ⋅16099823.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71794516813 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 (71794516853) 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, 1560750343 + ... + 1560750388.

It is an arithmetic number, because the mean of its divisors is an integer number (18729004392).

Almost surely, 2^71794516813 is an apocalyptic number.

It is an amenable number.

71794516813 is a deficient number, since it is larger than the sum of its proper divisors (3121500755).

71794516813 is a wasteful number, since it uses less digits than its factorization.

71794516813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3121500754.

The product of its digits is 1270080, while the sum is 52.

The spelling of 71794516813 in words is "seventy-one billion, seven hundred ninety-four million, five hundred sixteen thousand, eight hundred thirteen".