90796738691 has 4 divisors (see below), whose sum is σ = 91196724552. Its totient is φ = 90396752832.

The previous prime is 90796738679. The next prime is 90796738717. The reversal of 90796738691 is 19683769709.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19683769709 = 101 ⋅194888809.

It is a cyclic number.

It is not a de Polignac number, because 90796738691 - 2¹⁴ = 90796722307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90790738691) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 199992590 + ... + 199993043.

It is an arithmetic number, because the mean of its divisors is an integer number (22799181138).

Almost surely, 2^90796738691 is an apocalyptic number.

90796738691 is a deficient number, since it is larger than the sum of its proper divisors (399985861).

90796738691 is a wasteful number, since it uses less digits than its factorization.

90796738691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399985860.

The product of its (nonzero) digits is 30862944, while the sum is 65.

The spelling of 90796738691 in words is "ninety billion, seven hundred ninety-six million, seven hundred thirty-eight thousand, six hundred ninety-one".