23778451112 has 64 divisors (see below), whose sum is σ = 48615714000. Its totient is φ = 10837499904.

The previous prime is 23778450989. The next prime is 23778451121. The reversal of 23778451112 is 21115487732.

It can be written as a sum of positive squares in 8 ways, for example, as 10167495556 + 13610955556 = 100834^2 + 116666^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 23778451112.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 11929988 + ... + 11931980.

Almost surely, 2^23778451112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23778451112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24307857000).

23778451112 is an abundant number, since it is smaller than the sum of its proper divisors (24837262888).

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

23778451112 is a wasteful number, since it uses less digits than its factorization.

23778451112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3390 (or 3386 counting only the distinct ones).

The product of its digits is 94080, while the sum is 41.

The spelling of 23778451112 in words is "twenty-three billion, seven hundred seventy-eight million, four hundred fifty-one thousand, one hundred twelve".