10001911995866 has 32 divisors (see below), whose sum is σ = 17257216354560. Its totient is φ = 4258788368256.

The previous prime is 10001911995833. The next prime is 10001911995883. The reversal of 10001911995866 is 66859911910001.

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, 3758030 + ... + 5841798.

It is an arithmetic number, because the mean of its divisors is an integer number (539288011080).

Almost surely, 2^{10001911995866} is an apocalyptic number.

10001911995866 is a deficient number, since it is larger than the sum of its proper divisors (7255304358694).

10001911995866 is a wasteful number, since it uses less digits than its factorization.

10001911995866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2085998.

The product of its (nonzero) digits is 1049760, while the sum is 56.

The spelling of 10001911995866 in words is "ten trillion, one billion, nine hundred eleven million, nine hundred ninety-five thousand, eight hundred sixty-six".