122183051778 has 90 divisors (see below), whose sum is σ = 283846523961. Its totient is φ = 39281756976.

The previous prime is 122183051773. The next prime is 122183051801. The reversal of 122183051778 is 877150381221.

122183051778 is a `hidden beast` number, since 1 + 22 + 18 + 30 + 517 + 78 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 122110410249 + 72641529 = 349443^2 + 8523^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=247167.

It is a super-2 number, since 2×122183051778² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (122183051773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 129020701 + ... + 129021647.

Almost surely, 2^122183051778 is an apocalyptic number.

122183051778 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 122183051778

122183051778 is an abundant number, since it is smaller than the sum of its proper divisors (161663472183).

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

122183051778 is an frugal number, since it uses more digits than its factorization.

122183051778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1966 (or 981 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 45.

The spelling of 122183051778 in words is "one hundred twenty-two billion, one hundred eighty-three million, fifty-one thousand, seven hundred seventy-eight".