15885785854087 has 2 divisors, whose sum is σ = 15885785854088. Its totient is φ = 15885785854086.

The previous prime is 15885785854049. The next prime is 15885785854091. The reversal of 15885785854087 is 78045858758851.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15885785854087 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 15885785853998 and 15885785854016.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15885785854097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7942892927043 + 7942892927044.

It is an arithmetic number, because the mean of its divisors is an integer number (7942892927044).

Almost surely, 2^{15885785854087} is an apocalyptic number.

15885785854087 is a deficient number, since it is larger than the sum of its proper divisors (1).

15885785854087 is an equidigital number, since it uses as much as digits as its factorization.

15885785854087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4014080000, while the sum is 79.

The spelling of 15885785854087 in words is "fifteen trillion, eight hundred eighty-five billion, seven hundred eighty-five million, eight hundred fifty-four thousand, eighty-seven".