6111666801 has 6 divisors (see below), whose sum is σ = 8827963170. Its totient is φ = 4074444528.

The previous prime is 6111666797. The next prime is 6111666893. The reversal of 6111666801 is 1086661116.

It can be written as a sum of positive squares in only one way, i.e., 6052684401 + 58982400 = 77799^2 + 7680^2 .

It is not a de Polignac number, because 6111666801 - 2² = 6111666797 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6111616801) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 339537036 + ... + 339537053.

It is an arithmetic number, because the mean of its divisors is an integer number (1471327195).

Almost surely, 2^6111666801 is an apocalyptic number.

It is an amenable number.

6111666801 is a deficient number, since it is larger than the sum of its proper divisors (2716296369).

6111666801 is a wasteful number, since it uses less digits than its factorization.

6111666801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 679074095 (or 679074092 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 6111666801 is about 78177.1501207354. The cubic root of 6111666801 is about 1828.3242646139.

The spelling of 6111666801 in words is "six billion, one hundred eleven million, six hundred sixty-six thousand, eight hundred one".