121685327386 has 16 divisors (see below), whose sum is σ = 208610979264. Its totient is φ = 52148964384.

The previous prime is 121685327363. The next prime is 121685327501. The reversal of 121685327386 is 683723586121.

It is a happy 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, 285501 + ... + 569983.

It is an arithmetic number, because the mean of its divisors is an integer number (13038186204).

Almost surely, 2^121685327386 is an apocalyptic number.

121685327386 is a deficient number, since it is larger than the sum of its proper divisors (86925651878).

121685327386 is a wasteful number, since it uses less digits than its factorization.

121685327386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315045.

The product of its digits is 2903040, while the sum is 52.

The spelling of 121685327386 in words is "one hundred twenty-one billion, six hundred eighty-five million, three hundred twenty-seven thousand, three hundred eighty-six".