109778785884 has 36 divisors (see below), whose sum is σ = 292101449640. Its totient is φ = 34666984800.

The previous prime is 109778785859. The next prime is 109778785889. The reversal of 109778785884 is 488587877901.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×109778785884² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109778785889) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 80246967 + ... + 80248334.

Almost surely, 2^109778785884 is an apocalyptic number.

It is an amenable number.

109778785884 is an abundant number, since it is smaller than the sum of its proper divisors (182322663756).

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

109778785884 is a wasteful number, since it uses less digits than its factorization.

109778785884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160495330 (or 160495325 counting only the distinct ones).

The product of its (nonzero) digits is 252887040, while the sum is 72.

The spelling of 109778785884 in words is "one hundred nine billion, seven hundred seventy-eight million, seven hundred eighty-five thousand, eight hundred eighty-four".