122780378560 has 112 divisors (see below), whose sum is σ = 341247642624. Its totient is φ = 41200432128.

The previous prime is 122780378557. The next prime is 122780378627. The reversal of 122780378560 is 65873087221.

It is a tau number, because it is divible by the number of its divisors (112).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 477834 + ... + 688393.

It is an arithmetic number, because the mean of its divisors is an integer number (3046853952).

Almost surely, 2^122780378560 is an apocalyptic number.

122780378560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122780378560 is an abundant number, since it is smaller than the sum of its proper divisors (218467264064).

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

122780378560 is a wasteful number, since it uses less digits than its factorization.

122780378560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1166298 (or 1166288 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 49.

The spelling of 122780378560 in words is "one hundred twenty-two billion, seven hundred eighty million, three hundred seventy-eight thousand, five hundred sixty".