109185640600 has 24 divisors (see below), whose sum is σ = 253856614860. Its totient is φ = 43674256160.

The previous prime is 109185640579. The next prime is 109185640607. The reversal of 109185640600 is 6046581901.

It is a super-2 number, since 2×109185640600² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109185640607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 272963902 + ... + 272964301.

Almost surely, 2^109185640600 is an apocalyptic number.

109185640600 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

109185640600 is an abundant number, since it is smaller than the sum of its proper divisors (144670974260).

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

109185640600 is a wasteful number, since it uses less digits than its factorization.

109185640600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 545928219 (or 545928210 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 40.

The spelling of 109185640600 in words is "one hundred nine billion, one hundred eighty-five million, six hundred forty thousand, six hundred".