123220905048 has 256 divisors, whose sum is σ = 376959744000. Its totient is φ = 37152691200.

The previous prime is 123220905023. The next prime is 123220905107. The reversal of 123220905048 is 840509022321.

It is a happy number.

123220905048 is a `hidden beast` number, since 12 + 32 + 20 + 90 + 504 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7900618 + ... + 7916198.

It is an arithmetic number, because the mean of its divisors is an integer number (1472499000).

Almost surely, 2^123220905048 is an apocalyptic number.

123220905048 is a gapful number since it is divisible by the number (18) 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 123220905048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (188479872000).

123220905048 is an abundant number, since it is smaller than the sum of its proper divisors (253738838952).

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

123220905048 is a wasteful number, since it uses less digits than its factorization.

123220905048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15703 (or 15693 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

Adding to 123220905048 its reverse (840509022321), we get a palindrome (963729927369).

The spelling of 123220905048 in words is "one hundred twenty-three billion, two hundred twenty million, nine hundred five thousand, forty-eight".