1009109110090 has 16 divisors (see below), whose sum is σ = 1850668029288. Its totient is φ = 396027726016.

The previous prime is 1009109110073. The next prime is 1009109110129. The reversal of 1009109110090 is 900119019001.

It can be written as a sum of positive squares in 4 ways, for example, as 1009014223009 + 94887081 = 1004497^2 + 9741^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 951989197 + ... + 951990256.

Almost surely, 2^{1009109110090} is an apocalyptic number.

1009109110090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1009109110090 is a deficient number, since it is larger than the sum of its proper divisors (841558919198).

1009109110090 is a wasteful number, since it uses less digits than its factorization.

1009109110090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1903979513.

The product of its (nonzero) digits is 729, while the sum is 31.

The spelling of 1009109110090 in words is "one trillion, nine billion, one hundred nine million, one hundred ten thousand, ninety".