87415959613 has 2 divisors, whose sum is σ = 87415959614. Its totient is φ = 87415959612.

The previous prime is 87415959583. The next prime is 87415959647. The reversal of 87415959613 is 31695951478.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50688920164 + 36727039449 = 225142^2 + 191643^2 .

It is a cyclic number.

It is not a de Polignac number, because 87415959613 - 2¹⁷ = 87415828541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87415959313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43707979806 + 43707979807.

It is an arithmetic number, because the mean of its divisors is an integer number (43707979807).

Almost surely, 2^87415959613 is an apocalyptic number.

It is an amenable number.

87415959613 is a deficient number, since it is larger than the sum of its proper divisors (1).

87415959613 is an equidigital number, since it uses as much as digits as its factorization.

87415959613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8164800, while the sum is 58.

The spelling of 87415959613 in words is "eighty-seven billion, four hundred fifteen million, nine hundred fifty-nine thousand, six hundred thirteen".