87234479539213 has 2 divisors, whose sum is σ = 87234479539214. Its totient is φ = 87234479539212.

The previous prime is 87234479539169. The next prime is 87234479539243. The reversal of 87234479539213 is 31293597443278.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59285102901124 + 27949376638089 = 7699682^2 + 5286717^2 .

It is a cyclic number.

It is not a de Polignac number, because 87234479539213 - 2³³ = 87225889604621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87234479539243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43617239769606 + 43617239769607.

It is an arithmetic number, because the mean of its divisors is an integer number (43617239769607).

Almost surely, 2^{87234479539213} is an apocalyptic number.

It is an amenable number.

87234479539213 is a deficient number, since it is larger than the sum of its proper divisors (1).

87234479539213 is an equidigital number, since it uses as much as digits as its factorization.

87234479539213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 274337280, while the sum is 67.

The spelling of 87234479539213 in words is "eighty-seven trillion, two hundred thirty-four billion, four hundred seventy-nine million, five hundred thirty-nine thousand, two hundred thirteen".