100909191010 has 16 divisors (see below), whose sum is σ = 181786307256. Its totient is φ = 40330395648.

The previous prime is 100909190959. The next prime is 100909191011. The reversal of 100909191010 is 10191909001.

It can be written as a sum of positive squares in 4 ways, for example, as 87338571961 + 13570619049 = 295531^2 + 116493^2 .

It is not an unprimeable number, because it can be changed into a prime (100909191011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4147359 + ... + 4171618.

Almost surely, 2^100909191010 is an apocalyptic number.

100909191010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

100909191010 is a deficient number, since it is larger than the sum of its proper divisors (80877116246).

100909191010 is a wasteful number, since it uses less digits than its factorization.

100909191010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8320197.

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

The spelling of 100909191010 in words is "one hundred billion, nine hundred nine million, one hundred ninety-one thousand, ten".