103056661665 has 20 divisors (see below), whose sum is σ = 184738609044. Its totient is φ = 54963552672.

The previous prime is 103056661657. The next prime is 103056661709. The reversal of 103056661665 is 566166650301.

It can be written as a sum of positive squares in 2 ways, for example, as 25170457104 + 77886204561 = 158652^2 + 279081^2 .

It is not a de Polignac number, because 103056661665 - 2³ = 103056661657 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 103056661665.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 127230042 + ... + 127230851.

Almost surely, 2^103056661665 is an apocalyptic number.

103056661665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

103056661665 is a deficient number, since it is larger than the sum of its proper divisors (81681947379).

103056661665 is an equidigital number, since it uses as much as digits as its factorization.

103056661665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254460910 (or 254460901 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 45.

The spelling of 103056661665 in words is "one hundred three billion, fifty-six million, six hundred sixty-one thousand, six hundred sixty-five".