122403778560 has 1040 divisors, whose sum is σ = 511508422656. Its totient is φ = 27423277056.

The previous prime is 122403778531. The next prime is 122403778561. The reversal of 122403778560 is 65877304221.

122403778560 is a `hidden beast` number, since 1 + 224 + 0 + 377 + 8 + 56 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122403778561) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 963809217 + ... + 963809343.

Almost surely, 2^122403778560 is an apocalyptic number.

122403778560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122403778560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (255754211328).

122403778560 is an abundant number, since it is smaller than the sum of its proper divisors (389104644096).

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

122403778560 is an equidigital number, since it uses as much as digits as its factorization.

122403778560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258 (or 227 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 45.

The spelling of 122403778560 in words is "one hundred twenty-two billion, four hundred three million, seven hundred seventy-eight thousand, five hundred sixty".