72839691843 has 16 divisors (see below), whose sum is σ = 97224170400. Its totient is φ = 48507540224.

The previous prime is 72839691839. The next prime is 72839691893. The reversal of 72839691843 is 34819693827.

It is a cyclic number.

It is not a de Polignac number, because 72839691843 - 2² = 72839691839 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72839691823) 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, 16746433 + ... + 16750781.

It is an arithmetic number, because the mean of its divisors is an integer number (6076510650).

Almost surely, 2^72839691843 is an apocalyptic number.

72839691843 is a deficient number, since it is larger than the sum of its proper divisors (24384478557).

72839691843 is a wasteful number, since it uses less digits than its factorization.

72839691843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9078.

The product of its digits is 15676416, while the sum is 60.

The spelling of 72839691843 in words is "seventy-two billion, eight hundred thirty-nine million, six hundred ninety-one thousand, eight hundred forty-three".