72839311237 has 16 divisors (see below), whose sum is σ = 91694333952. Its totient is φ = 56206851120.

The previous prime is 72839311201. The next prime is 72839311249. The reversal of 72839311237 is 73211393827.

It is a happy number.

It is not a de Polignac number, because 72839311237 - 2⁷ = 72839311109 is a prime.

It is a super-2 number, since 2×72839311237² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72839311267) 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, 4584133 + ... + 4599994.

It is an arithmetic number, because the mean of its divisors is an integer number (5730895872).

Almost surely, 2^72839311237 is an apocalyptic number.

72839311237 is a gapful number since it is divisible by the number (77) formed by its first and last digit.

It is an amenable number.

72839311237 is a deficient number, since it is larger than the sum of its proper divisors (18855022715).

72839311237 is a wasteful number, since it uses less digits than its factorization.

72839311237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9184248.

The product of its digits is 381024, while the sum is 46.

The spelling of 72839311237 in words is "seventy-two billion, eight hundred thirty-nine million, three hundred eleven thousand, two hundred thirty-seven".