1100157565806 has 48 divisors (see below), whose sum is σ = 2589751500336. Its totient is φ = 335514348288.

The previous prime is 1100157565783. The next prime is 1100157565807. The reversal of 1100157565806 is 6085657510011.

It is a happy number.

1100157565806 is a `hidden beast` number, since 1 + 1 + 0 + 0 + 1 + 5 + 7 + 565 + 80 + 6 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100157565807) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20776780 + ... + 20829663.

It is an arithmetic number, because the mean of its divisors is an integer number (53953156257).

Almost surely, 2^{1100157565806} is an apocalyptic number.

1100157565806 is an abundant number, since it is smaller than the sum of its proper divisors (1489593934530).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1100157565806 is a wasteful number, since it uses less digits than its factorization.

1100157565806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41606577 (or 41606574 counting only the distinct ones).

The product of its (nonzero) digits is 252000, while the sum is 45.

The spelling of 1100157565806 in words is "one trillion, one hundred billion, one hundred fifty-seven million, five hundred sixty-five thousand, eight hundred six".