83923791121 has 8 divisors (see below), whose sum is σ = 86263966440. Its totient is φ = 81611642112.

The previous prime is 83923791101. The next prime is 83923791143. The reversal of 83923791121 is 12119732938.

It can be written as a sum of positive squares in 4 ways, for example, as 10396045521 + 73527745600 = 101961^2 + 271160^2 .

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

It is not a de Polignac number, because 83923791121 - 2⁵ = 83923791089 is a prime.

It is a super-2 number, since 2×83923791121² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83923791101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7000506 + ... + 7012483.

It is an arithmetic number, because the mean of its divisors is an integer number (10782995805).

Almost surely, 2^83923791121 is an apocalyptic number.

It is an amenable number.

83923791121 is a deficient number, since it is larger than the sum of its proper divisors (2340175319).

83923791121 is a wasteful number, since it uses less digits than its factorization.

83923791121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14013155.

The product of its digits is 163296, while the sum is 46.

The spelling of 83923791121 in words is "eighty-three billion, nine hundred twenty-three million, seven hundred ninety-one thousand, one hundred twenty-one".