121764193846 has 16 divisors (see below), whose sum is σ = 198616954176. Its totient is φ = 55752126336.

The previous prime is 121764193823. The next prime is 121764193849. The reversal of 121764193846 is 648391467121.

It is a junction number, because it is equal to n+sod(n) for n = 121764193793 and 121764193802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121764193849) 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 7 ways as a sum of consecutive naturals, for example, 48394686 + ... + 48397201.

It is an arithmetic number, because the mean of its divisors is an integer number (12413559636).

Almost surely, 2^121764193846 is an apocalyptic number.

121764193846 is a deficient number, since it is larger than the sum of its proper divisors (76852760330).

121764193846 is a wasteful number, since it uses less digits than its factorization.

121764193846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96791943.

The product of its digits is 1741824, while the sum is 52.

The spelling of 121764193846 in words is "one hundred twenty-one billion, seven hundred sixty-four million, one hundred ninety-three thousand, eight hundred forty-six".