109657761212 has 24 divisors (see below), whose sum is σ = 197312560704. Its totient is φ = 53286126912.

The previous prime is 109657761203. The next prime is 109657761251. The reversal of 109657761212 is 212167756901.

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 7 ways as a sum of consecutive naturals, for example, 292628 + ... + 552219.

It is an arithmetic number, because the mean of its divisors is an integer number (8221356696).

Almost surely, 2^109657761212 is an apocalyptic number.

It is an amenable number.

109657761212 is a deficient number, since it is larger than the sum of its proper divisors (87654799492).

109657761212 is a wasteful number, since it uses less digits than its factorization.

109657761212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 845765 (or 845763 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 47.

The spelling of 109657761212 in words is "one hundred nine billion, six hundred fifty-seven million, seven hundred sixty-one thousand, two hundred twelve".