87766015166 has 4 divisors (see below), whose sum is σ = 131649022752. Its totient is φ = 43883007582.

The previous prime is 87766015153. The next prime is 87766015171. The reversal of 87766015166 is 66151066778.

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, 21941503790 + ... + 21941503793.

It is an arithmetic number, because the mean of its divisors is an integer number (32912255688).

Almost surely, 2^87766015166 is an apocalyptic number.

87766015166 is a deficient number, since it is larger than the sum of its proper divisors (43883007586).

87766015166 is a wasteful number, since it uses less digits than its factorization.

87766015166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43883007585.

The product of its (nonzero) digits is 2540160, while the sum is 53.

The spelling of 87766015166 in words is "eighty-seven billion, seven hundred sixty-six million, fifteen thousand, one hundred sixty-six".