87814659013 has 2 divisors, whose sum is σ = 87814659014. Its totient is φ = 87814659012.

The previous prime is 87814658963. The next prime is 87814659017. The reversal of 87814659013 is 31095641878.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 87342118369 + 472540644 = 295537^2 + 21738^2 .

It is a cyclic number.

It is not a de Polignac number, because 87814659013 - 2²⁵ = 87781104581 is a prime.

It is a super-2 number, since 2×87814659013² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87814659017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43907329506 + 43907329507.

It is an arithmetic number, because the mean of its divisors is an integer number (43907329507).

Almost surely, 2^87814659013 is an apocalyptic number.

It is an amenable number.

87814659013 is a deficient number, since it is larger than the sum of its proper divisors (1).

87814659013 is an equidigital number, since it uses as much as digits as its factorization.

87814659013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1451520, while the sum is 52.

The spelling of 87814659013 in words is "eighty-seven billion, eight hundred fourteen million, six hundred fifty-nine thousand, thirteen".