123334445778 has 16 divisors (see below), whose sum is σ = 247002687840. Its totient is φ = 41055849216.

The previous prime is 123334445753. The next prime is 123334445867. The reversal of 123334445778 is 877544433321.

It is a super-2 number, since 2×123334445778² (a number of 23 digits) contains 22 as substring.

It is a plaindrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 123334445778.

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, 13903375 + ... + 13912242.

It is an arithmetic number, because the mean of its divisors is an integer number (15437667990).

Almost surely, 2^123334445778 is an apocalyptic number.

123334445778 is an abundant number, since it is smaller than the sum of its proper divisors (123668242062).

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

123334445778 is a wasteful number, since it uses less digits than its factorization.

123334445778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27816361.

The product of its digits is 6773760, while the sum is 51.

The spelling of 123334445778 in words is "one hundred twenty-three billion, three hundred thirty-four million, four hundred forty-five thousand, seven hundred seventy-eight".