87039338537 has 4 divisors (see below), whose sum is σ = 87062050260. Its totient is φ = 87016626816.

The previous prime is 87039338531. The next prime is 87039338651. The reversal of 87039338537 is 73583393078.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19724517136 + 67314821401 = 140444^2 + 259451^2 .

It is a cyclic number.

It is not a de Polignac number, because 87039338537 - 2⁶ = 87039338473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87039338531) 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, 11350112 + ... + 11357777.

It is an arithmetic number, because the mean of its divisors is an integer number (21765512565).

Almost surely, 2^87039338537 is an apocalyptic number.

It is an amenable number.

87039338537 is a deficient number, since it is larger than the sum of its proper divisors (22711723).

87039338537 is a wasteful number, since it uses less digits than its factorization.

87039338537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22711722.

The product of its (nonzero) digits is 11430720, while the sum is 56.

The spelling of 87039338537 in words is "eighty-seven billion, thirty-nine million, three hundred thirty-eight thousand, five hundred thirty-seven".