109215435168 has 108 divisors (see below), whose sum is σ = 361288606770. Its totient is φ = 31204406016.

The previous prime is 109215435139. The next prime is 109215435191. The reversal of 109215435168 is 861534512901.

It is a happy number.

109215435168 is a `hidden beast` number, since 1 + 0 + 92 + 1 + 5 + 43 + 516 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 106388173584 + 2827261584 = 326172^2 + 53172^2 .

It is a super-2 number, since 2×109215435168² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 3855483 + ... + 3883706.

Almost surely, 2^109215435168 is an apocalyptic number.

109215435168 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

109215435168 is an abundant number, since it is smaller than the sum of its proper divisors (252073171602).

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

109215435168 is a wasteful number, since it uses less digits than its factorization.

109215435168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7739219 (or 7739201 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 45.

The spelling of 109215435168 in words is "one hundred nine billion, two hundred fifteen million, four hundred thirty-five thousand, one hundred sixty-eight".