87230087137 has 2 divisors, whose sum is σ = 87230087138. Its totient is φ = 87230087136.

The previous prime is 87230087093. The next prime is 87230087177. The reversal of 87230087137 is 73178003278.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 86904681616 + 325405521 = 294796^2 + 18039^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87230087137 is a prime.

It is a super-2 number, since 2×87230087137² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (87230087177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43615043568 + 43615043569.

It is an arithmetic number, because the mean of its divisors is an integer number (43615043569).

Almost surely, 2^87230087137 is an apocalyptic number.

It is an amenable number.

87230087137 is a deficient number, since it is larger than the sum of its proper divisors (1).

87230087137 is an equidigital number, since it uses as much as digits as its factorization.

87230087137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 395136, while the sum is 46.

The spelling of 87230087137 in words is "eighty-seven billion, two hundred thirty million, eighty-seven thousand, one hundred thirty-seven".