121445474768 has 20 divisors (see below), whose sum is σ = 243414422340. Its totient is φ = 58628849664.

The previous prime is 121445474749. The next prime is 121445474779. The reversal of 121445474768 is 867474544121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 101027351104 + 20418123664 = 317848^2 + 142892^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130867505 + ... + 130868432.

It is an arithmetic number, because the mean of its divisors is an integer number (12170721117).

Almost surely, 2^121445474768 is an apocalyptic number.

It is an amenable number.

121445474768 is an abundant number, since it is smaller than the sum of its proper divisors (121968947572).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121445474768 is a wasteful number, since it uses less digits than its factorization.

121445474768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261735974 (or 261735968 counting only the distinct ones).

The product of its digits is 6021120, while the sum is 53.

The spelling of 121445474768 in words is "one hundred twenty-one billion, four hundred forty-five million, four hundred seventy-four thousand, seven hundred sixty-eight".