83680811619494 has 16 divisors (see below), whose sum is σ = 126369931845120. Its totient is φ = 41557577531400.

The previous prime is 83680811619443. The next prime is 83680811619499. The reversal of 83680811619494 is 49491611808638.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83680811619499) 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, 16940654 + ... + 21315425.

It is an arithmetic number, because the mean of its divisors is an integer number (7898120740320).

Almost surely, 2^{83680811619494} is an apocalyptic number.

83680811619494 is a deficient number, since it is larger than the sum of its proper divisors (42689120225626).

83680811619494 is a wasteful number, since it uses less digits than its factorization.

83680811619494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38263475.

The product of its (nonzero) digits is 71663616, while the sum is 68.

The spelling of 83680811619494 in words is "eighty-three trillion, six hundred eighty billion, eight hundred eleven million, six hundred nineteen thousand, four hundred ninety-four".