87124856737 has 4 divisors (see below), whose sum is σ = 89151016240. Its totient is φ = 85098697236.

The previous prime is 87124856723. The next prime is 87124856747. The reversal of 87124856737 is 73765842178.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 87124856737 - 2²³ = 87116468129 is a prime.

It is a super-2 number, since 2×87124856737² (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 (87124856747) 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 3 ways as a sum of consecutive naturals, for example, 1013079687 + ... + 1013079772.

It is an arithmetic number, because the mean of its divisors is an integer number (22287754060).

Almost surely, 2^87124856737 is an apocalyptic number.

It is an amenable number.

87124856737 is a deficient number, since it is larger than the sum of its proper divisors (2026159503).

87124856737 is a wasteful number, since it uses less digits than its factorization.

87124856737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2026159502.

The product of its digits is 15805440, while the sum is 58.

The spelling of 87124856737 in words is "eighty-seven billion, one hundred twenty-four million, eight hundred fifty-six thousand, seven hundred thirty-seven".