873799131537 has 24 divisors (see below), whose sum is σ = 1263379684008. Its totient is φ = 581967417600.

The previous prime is 873799131481. The next prime is 873799131553. The reversal of 873799131537 is 735131997378.

873799131537 is a `hidden beast` number, since 8 + 7 + 3 + 7 + 9 + 91 + 3 + 1 + 537 = 666.

873799131537 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 18231480576 + 855567650961 = 135024^2 + 924969^2 .

It is not a de Polignac number, because 873799131537 - 2²² = 873794937233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (873799131137) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 80447487 + ... + 80458347.

It is an arithmetic number, because the mean of its divisors is an integer number (52640820167).

Almost surely, 2^873799131537 is an apocalyptic number.

It is an amenable number.

873799131537 is a deficient number, since it is larger than the sum of its proper divisors (389580552471).

873799131537 is a wasteful number, since it uses less digits than its factorization.

873799131537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18721 (or 18718 counting only the distinct ones).

The product of its digits is 30005640, while the sum is 63.

The spelling of 873799131537 in words is "eight hundred seventy-three billion, seven hundred ninety-nine million, one hundred thirty-one thousand, five hundred thirty-seven".