71715906401 has 4 divisors (see below), whose sum is σ = 74833989312. Its totient is φ = 68597823492.

The previous prime is 71715906371. The next prime is 71715906433. The reversal of 71715906401 is 10460951717.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71715906401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71715906481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1559041421 + ... + 1559041466.

It is an arithmetic number, because the mean of its divisors is an integer number (18708497328).

Almost surely, 2^71715906401 is an apocalyptic number.

It is an amenable number.

71715906401 is a deficient number, since it is larger than the sum of its proper divisors (3118082911).

71715906401 is a wasteful number, since it uses less digits than its factorization.

71715906401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3118082910.

The product of its (nonzero) digits is 52920, while the sum is 41.

The spelling of 71715906401 in words is "seventy-one billion, seven hundred fifteen million, nine hundred six thousand, four hundred one".