71715906399 has 8 divisors (see below), whose sum is σ = 95642845312. Its totient is φ = 47799785880.

The previous prime is 71715906371. The next prime is 71715906433. The reversal of 71715906399 is 99360951717.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 71715906399 - 2²⁵ = 71682351967 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 (71715906329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2689117 + ... + 2715654.

It is an arithmetic number, because the mean of its divisors is an integer number (11955355664).

Almost surely, 2^71715906399 is an apocalyptic number.

71715906399 is a deficient number, since it is larger than the sum of its proper divisors (23926938913).

71715906399 is a wasteful number, since it uses less digits than its factorization.

71715906399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5409197.

The product of its (nonzero) digits is 3214890, while the sum is 57.

The spelling of 71715906399 in words is "seventy-one billion, seven hundred fifteen million, nine hundred six thousand, three hundred ninety-nine".