716807487781 has 16 divisors (see below), whose sum is σ = 932537806848. Its totient is φ = 534266449200.

The previous prime is 716807487779. The next prime is 716807487787. The reversal of 716807487781 is 187784708617.

It is not a de Polignac number, because 716807487781 - 2¹ = 716807487779 is a prime.

It is a super-2 number, since 2×716807487781² (a number of 25 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 (716807487787) 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 15 ways as a sum of consecutive naturals, for example, 202371885 + ... + 202375426.

It is an arithmetic number, because the mean of its divisors is an integer number (58283612928).

Almost surely, 2^716807487781 is an apocalyptic number.

It is an amenable number.

716807487781 is a deficient number, since it is larger than the sum of its proper divisors (215730319067).

716807487781 is a wasteful number, since it uses less digits than its factorization.

716807487781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404747352.

The product of its (nonzero) digits is 29503488, while the sum is 64.

The spelling of 716807487781 in words is "seven hundred sixteen billion, eight hundred seven million, four hundred eighty-seven thousand, seven hundred eighty-one".