83991391701 has 16 divisors (see below), whose sum is σ = 128073349248. Its totient is φ = 47962656000.

The previous prime is 83991391691. The next prime is 83991391709. The reversal of 83991391701 is 10719319938.

It is not a de Polignac number, because 83991391701 - 2⁷ = 83991391573 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83991391709) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1319200 + ... + 1381401.

It is an arithmetic number, because the mean of its divisors is an integer number (8004584328).

Almost surely, 2^83991391701 is an apocalyptic number.

It is an amenable number.

83991391701 is a deficient number, since it is larger than the sum of its proper divisors (44081957547).

83991391701 is a wasteful number, since it uses less digits than its factorization.

83991391701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2702092.

The product of its (nonzero) digits is 367416, while the sum is 51.

The spelling of 83991391701 in words is "eighty-three billion, nine hundred ninety-one million, three hundred ninety-one thousand, seven hundred one".