109609287400 has 48 divisors (see below), whose sum is σ = 263629248300. Its totient is φ = 42331860480.

The previous prime is 109609287311. The next prime is 109609287413. The reversal of 109609287400 is 4782906901.

It can be written as a sum of positive squares in 6 ways, for example, as 48688187716 + 60921099684 = 220654^2 + 246822^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9443277 + ... + 9454876.

Almost surely, 2^109609287400 is an apocalyptic number.

109609287400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

109609287400 is an abundant number, since it is smaller than the sum of its proper divisors (154019960900).

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

109609287400 is a wasteful number, since it uses less digits than its factorization.

109609287400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18898198 (or 18898189 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 46.

The spelling of 109609287400 in words is "one hundred nine billion, six hundred nine million, two hundred eighty-seven thousand, four hundred".