109165481604 has 81 divisors (see below), whose sum is σ = 281521799013. Its totient is φ = 35667556704.

The previous prime is 109165481591. The next prime is 109165481639. The reversal of 109165481604 is 406184561901.

The square root of 109165481604 is 330402.

It is a perfect power (a square), and thus also a powerful number.

109165481604 is a `hidden beast` number, since 1 + 0 + 9 + 165 + 481 + 6 + 0 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 78697080900 + 30468400704 = 280530^2 + 174552^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 109165481604.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 105067317 + ... + 105068355.

Almost surely, 2^109165481604 is an apocalyptic number.

109165481604 is the 330402-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 109165481604

109165481604 is an abundant number, since it is smaller than the sum of its proper divisors (172356317409).

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

109165481604 is an equidigital number, since it uses as much as digits as its factorization.

109165481604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2194 (or 1097 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The spelling of 109165481604 in words is "one hundred nine billion, one hundred sixty-five million, four hundred eighty-one thousand, six hundred four".