87786343966 has 4 divisors (see below), whose sum is σ = 131679515952. Its totient is φ = 43893171982.

The previous prime is 87786343951. The next prime is 87786343987. The reversal of 87786343966 is 66934368778.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21946585990 + ... + 21946585993.

It is an arithmetic number, because the mean of its divisors is an integer number (32919878988).

Almost surely, 2^87786343966 is an apocalyptic number.

87786343966 is a deficient number, since it is larger than the sum of its proper divisors (43893171986).

87786343966 is a wasteful number, since it uses less digits than its factorization.

87786343966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43893171985.

The product of its digits is 219469824, while the sum is 67.

The spelling of 87786343966 in words is "eighty-seven billion, seven hundred eighty-six million, three hundred forty-three thousand, nine hundred sixty-six".