109312157205 has 40 divisors (see below), whose sum is σ = 196295752224. Its totient is φ = 58197592800.

The previous prime is 109312157173. The next prime is 109312157231. The reversal of 109312157205 is 502751213901.

It is not a de Polignac number, because 109312157205 - 2⁵ = 109312157173 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 109312157205.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 5091 + ... + 467600.

Almost surely, 2^109312157205 is an apocalyptic number.

109312157205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

109312157205 is a deficient number, since it is larger than the sum of its proper divisors (86983595019).

109312157205 is an equidigital number, since it uses as much as digits as its factorization.

109312157205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473279 (or 473270 counting only the distinct ones).

The product of its (nonzero) digits is 18900, while the sum is 36.

The spelling of 109312157205 in words is "one hundred nine billion, three hundred twelve million, one hundred fifty-seven thousand, two hundred five".