87615165105623 has 2 divisors, whose sum is σ = 87615165105624. Its totient is φ = 87615165105622.

The previous prime is 87615165105521. The next prime is 87615165105641. The reversal of 87615165105623 is 32650156151678.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87615165105623 - 2²⁸ = 87614896670167 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87615165005623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43807582552811 + 43807582552812.

It is an arithmetic number, because the mean of its divisors is an integer number (43807582552812).

Almost surely, 2^{87615165105623} is an apocalyptic number.

87615165105623 is a deficient number, since it is larger than the sum of its proper divisors (1).

87615165105623 is an equidigital number, since it uses as much as digits as its factorization.

87615165105623 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072000, while the sum is 56.

The spelling of 87615165105623 in words is "eighty-seven trillion, six hundred fifteen billion, one hundred sixty-five million, one hundred five thousand, six hundred twenty-three".