123581123160 has 256 divisors, whose sum is σ = 440417088000. Its totient is φ = 27403407360.

The previous prime is 123581123147. The next prime is 123581123201. The reversal of 123581123160 is 61321185321.

It is a Harshad number since it is a multiple of its sum of digits (33).

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, 642364 + ... + 812276.

It is an arithmetic number, because the mean of its divisors is an integer number (1720379250).

Almost surely, 2^123581123160 is an apocalyptic number.

123581123160 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 123581123160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (220208544000).

123581123160 is an abundant number, since it is smaller than the sum of its proper divisors (316835964840).

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

123581123160 is a wasteful number, since it uses less digits than its factorization.

123581123160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169986 (or 169982 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 33.

The spelling of 123581123160 in words is "one hundred twenty-three billion, five hundred eighty-one million, one hundred twenty-three thousand, one hundred sixty".