816929771613 has 8 divisors (see below), whose sum is σ = 1089290239968. Its totient is φ = 544594575504.

The previous prime is 816929771569. The next prime is 816929771657. The reversal of 816929771613 is 316177929618.

It is an interprime number because it is at equal distance from previous prime (816929771569) and next prime (816929771657).

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

It is not a de Polignac number, because 816929771613 - 2¹⁸ = 816929509469 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (816929771663) 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, 6242506 + ... + 6372027.

It is an arithmetic number, because the mean of its divisors is an integer number (136161279996).

Almost surely, 2^816929771613 is an apocalyptic number.

It is an amenable number.

816929771613 is a deficient number, since it is larger than the sum of its proper divisors (272360468355).

816929771613 is a wasteful number, since it uses less digits than its factorization.

816929771613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12636123.

The product of its digits is 6858432, while the sum is 60.

The spelling of 816929771613 in words is "eight hundred sixteen billion, nine hundred twenty-nine million, seven hundred seventy-one thousand, six hundred thirteen".