109518028440 has 192 divisors, whose sum is σ = 347330268000. Its totient is φ = 27621955584.

The previous prime is 109518028427. The next prime is 109518028457. The reversal of 109518028440 is 44820815901.

It is a junction number, because it is equal to n+sod(n) for n = 109518028392 and 109518028401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 31751836 + ... + 31755284.

Almost surely, 2^109518028440 is an apocalyptic number.

109518028440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 109518028440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (173665134000).

109518028440 is an abundant number, since it is smaller than the sum of its proper divisors (237812239560).

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

109518028440 is a wasteful number, since it uses less digits than its factorization.

109518028440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4234 (or 4211 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 42.

The spelling of 109518028440 in words is "one hundred nine billion, five hundred eighteen million, twenty-eight thousand, four hundred forty".