83191661924 has 24 divisors (see below), whose sum is σ = 176170579200. Its totient is φ = 33556300416.

The previous prime is 83191661923. The next prime is 83191661933. The reversal of 83191661924 is 42916619138.

It is a super-2 number, since 2×83191661924² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (83191661923) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 87385724 + ... + 87386675.

It is an arithmetic number, because the mean of its divisors is an integer number (7340440800).

Almost surely, 2^83191661924 is an apocalyptic number.

It is an amenable number.

83191661924 is an abundant number, since it is smaller than the sum of its proper divisors (92978917276).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

83191661924 is a wasteful number, since it uses less digits than its factorization.

83191661924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174772427 (or 174772425 counting only the distinct ones).

The product of its digits is 559872, while the sum is 50.

The spelling of 83191661924 in words is "eighty-three billion, one hundred ninety-one million, six hundred sixty-one thousand, nine hundred twenty-four".