8123966655 has 16 divisors (see below), whose sum is σ = 14855253504. Its totient is φ = 3713813280.

The previous prime is 8123966639. The next prime is 8123966777. The reversal of 8123966655 is 5566693218.

It is not a de Polignac number, because 8123966655 - 2⁴ = 8123966639 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8123966598 and 8123966607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38685451 + ... + 38685660.

It is an arithmetic number, because the mean of its divisors is an integer number (928453344).

Almost surely, 2^8123966655 is an apocalyptic number.

8123966655 is a deficient number, since it is larger than the sum of its proper divisors (6731286849).

8123966655 is a wasteful number, since it uses less digits than its factorization.

8123966655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77371126.

The product of its digits is 2332800, while the sum is 51.

The square root of 8123966655 is about 90133.0497375963. The cubic root of 8123966655 is about 2010.2776490790.

The spelling of 8123966655 in words is "eight billion, one hundred twenty-three million, nine hundred sixty-six thousand, six hundred fifty-five".