121780373876 has 24 divisors (see below), whose sum is σ = 245972246016. Its totient is φ = 51674839200.

The previous prime is 121780373837. The next prime is 121780373899. The reversal of 121780373876 is 678373087121.

It is a super-2 number, since 2×121780373876² (a number of 23 digits) contains 22 as substring.

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, 21528356 + ... + 21534011.

It is an arithmetic number, because the mean of its divisors is an integer number (10248843584).

Almost surely, 2^121780373876 is an apocalyptic number.

It is an amenable number.

121780373876 is an abundant number, since it is smaller than the sum of its proper divisors (124191872140).

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

121780373876 is a wasteful number, since it uses less digits than its factorization.

121780373876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43062479 (or 43062477 counting only the distinct ones).

The product of its (nonzero) digits is 2370816, while the sum is 53.

The spelling of 121780373876 in words is "one hundred twenty-one billion, seven hundred eighty million, three hundred seventy-three thousand, eight hundred seventy-six".