716155621715 has 4 divisors (see below), whose sum is σ = 859386746064. Its totient is φ = 572924497368.

The previous prime is 716155621681. The next prime is 716155621733. The reversal of 716155621715 is 517126551617.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 517126551617 = 13 ⋅39778965509.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-716155621715 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 716155621715.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71615562167 + ... + 71615562176.

It is an arithmetic number, because the mean of its divisors is an integer number (214846686516).

Almost surely, 2^716155621715 is an apocalyptic number.

716155621715 is a deficient number, since it is larger than the sum of its proper divisors (143231124349).

716155621715 is a wasteful number, since it uses less digits than its factorization.

716155621715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143231124348.

The product of its digits is 441000, while the sum is 47.

The spelling of 716155621715 in words is "seven hundred sixteen billion, one hundred fifty-five million, six hundred twenty-one thousand, seven hundred fifteen".