87764173655 has 16 divisors (see below), whose sum is σ = 105662872224. Its totient is φ = 69980897280.

The previous prime is 87764173603. The next prime is 87764173663. The reversal of 87764173655 is 55637146778.

It is not a de Polignac number, because 87764173655 - 2²⁸ = 87495738199 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 87764173594 and 87764173603.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7210775 + ... + 7222935.

It is an arithmetic number, because the mean of its divisors is an integer number (6603929514).

Almost surely, 2^87764173655 is an apocalyptic number.

87764173655 is a deficient number, since it is larger than the sum of its proper divisors (17898698569).

87764173655 is a wasteful number, since it uses less digits than its factorization.

87764173655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16786.

The product of its digits is 29635200, while the sum is 59.

The spelling of 87764173655 in words is "eighty-seven billion, seven hundred sixty-four million, one hundred seventy-three thousand, six hundred fifty-five".