87234479539169 has 2 divisors, whose sum is σ = 87234479539170. Its totient is φ = 87234479539168.

The previous prime is 87234479539157. The next prime is 87234479539213. The reversal of 87234479539169 is 96193597443278.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47898690708544 + 39335788830625 = 6920888^2 + 6271825^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87234479539169 is a prime.

It is a super-2 number, since 2×87234479539169² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 87234479539169.

It is not a weakly prime, because it can be changed into another prime (87234479532169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43617239769584 + 43617239769585.

It is an arithmetic number, because the mean of its divisors is an integer number (43617239769585).

Almost surely, 2^{87234479539169} is an apocalyptic number.

It is an amenable number.

87234479539169 is a deficient number, since it is larger than the sum of its proper divisors (1).

87234479539169 is an equidigital number, since it uses as much as digits as its factorization.

87234479539169 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2469035520, while the sum is 77.

The spelling of 87234479539169 in words is "eighty-seven trillion, two hundred thirty-four billion, four hundred seventy-nine million, five hundred thirty-nine thousand, one hundred sixty-nine".