81996676692707 has 8 divisors (see below), whose sum is σ = 93712986162432. Its totient is φ = 70280991851400.

The previous prime is 81996676692673. The next prime is 81996676692713. The reversal of 81996676692707 is 70729667669918.

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

It is a cyclic number.

It is not a de Polignac number, because 81996676692707 - 2⁸ = 81996676692451 is a prime.

It is not an unprimeable number, because it can be changed into a prime (81996676692797) 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, 155875769 + ... + 156400922.

It is an arithmetic number, because the mean of its divisors is an integer number (11714123270304).

Almost surely, 2^{81996676692707} is an apocalyptic number.

81996676692707 is a deficient number, since it is larger than the sum of its proper divisors (11716309469725).

81996676692707 is a wasteful number, since it uses less digits than its factorization.

81996676692707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312314209.

The product of its (nonzero) digits is 5184974592, while the sum is 83.

The spelling of 81996676692707 in words is "eighty-one trillion, nine hundred ninety-six billion, six hundred seventy-six million, six hundred ninety-two thousand, seven hundred seven".