87774967659 has 4 divisors (see below), whose sum is σ = 117033290216. Its totient is φ = 58516645104.

The previous prime is 87774967649. The next prime is 87774967699. The reversal of 87774967659 is 95676947778.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 87774967659 - 2⁷ = 87774967531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87774967649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14629161274 + ... + 14629161279.

It is an arithmetic number, because the mean of its divisors is an integer number (29258322554).

Almost surely, 2^87774967659 is an apocalyptic number.

87774967659 is a deficient number, since it is larger than the sum of its proper divisors (29258322557).

87774967659 is a wasteful number, since it uses less digits than its factorization.

87774967659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29258322556.

The product of its digits is 1120210560, while the sum is 75.

The spelling of 87774967659 in words is "eighty-seven billion, seven hundred seventy-four million, nine hundred sixty-seven thousand, six hundred fifty-nine".