87838331522 has 6 divisors (see below), whose sum is σ = 131758125993. Its totient is φ = 43918956192.

The previous prime is 87838331519. The next prime is 87838331563. The reversal of 87838331522 is 22513383878.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 50140614241 + 37697717281 = 223921^2 + 194159^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=209569.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 314354 + ... + 523922.

Almost surely, 2^87838331522 is an apocalyptic number.

87838331522 is a deficient number, since it is larger than the sum of its proper divisors (43919794471).

87838331522 is an frugal number, since it uses more digits than its factorization.

87838331522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419140 (or 209571 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 50.

Multiplying 87838331522 by its sum of digits (50), we get a square (4391916576100 = 2095690²).

The spelling of 87838331522 in words is "eighty-seven billion, eight hundred thirty-eight million, three hundred thirty-one thousand, five hundred twenty-two".