109439768500 has 24 divisors (see below), whose sum is σ = 239016455496. Its totient is φ = 43775907200.

The previous prime is 109439768483. The next prime is 109439768519. The reversal of 109439768500 is 5867934901.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4799164176 + 104640604324 = 69276^2 + 323482^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109439269 + ... + 109440268.

It is an arithmetic number, because the mean of its divisors is an integer number (9959018979).

Almost surely, 2^109439768500 is an apocalyptic number.

109439768500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

109439768500 is an abundant number, since it is smaller than the sum of its proper divisors (129576686996).

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

109439768500 is a wasteful number, since it uses less digits than its factorization.

109439768500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218879556 (or 218879544 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 52.

The spelling of 109439768500 in words is "one hundred nine billion, four hundred thirty-nine million, seven hundred sixty-eight thousand, five hundred".