121456888966918 has 16 divisors (see below), whose sum is σ = 184018745058624. Its totient is φ = 60117500721600.

The previous prime is 121456888966879. The next prime is 121456888966937. The reversal of 121456888966918 is 819669888654121.

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, 47101230 + ... + 49612897.

It is an arithmetic number, because the mean of its divisors is an integer number (11501171566164).

Almost surely, 2^{121456888966918} is an apocalyptic number.

121456888966918 is a deficient number, since it is larger than the sum of its proper divisors (62561856091706).

121456888966918 is a wasteful number, since it uses less digits than its factorization.

121456888966918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96720447.

The product of its digits is 2866544640, while the sum is 82.

The spelling of 121456888966918 in words is "one hundred twenty-one trillion, four hundred fifty-six billion, eight hundred eighty-eight million, nine hundred sixty-six thousand, nine hundred eighteen".