91680699074372 has 6 divisors (see below), whose sum is σ = 160441223380158. Its totient is φ = 45840349537184.

The previous prime is 91680699074333. The next prime is 91680699074389. The reversal of 91680699074372 is 27347099608619.

It can be written as a sum of positive squares in only one way, i.e., 51234329889856 + 40446369184516 = 7157816^2 + 6359746^2 .

It is a junction number, because it is equal to n+sod(n) for n = 91680699074296 and 91680699074305.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 11460087384293 + ... + 11460087384300.

It is an arithmetic number, because the mean of its divisors is an integer number (26740203896693).

Almost surely, 2^{91680699074372} is an apocalyptic number.

It is an amenable number.

91680699074372 is a deficient number, since it is larger than the sum of its proper divisors (68760524305786).

91680699074372 is a wasteful number, since it uses less digits than its factorization.

91680699074372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22920174768597 (or 22920174768595 counting only the distinct ones).

The product of its (nonzero) digits is 246903552, while the sum is 71.

The spelling of 91680699074372 in words is "ninety-one trillion, six hundred eighty billion, six hundred ninety-nine million, seventy-four thousand, three hundred seventy-two".