12457058550 has 192 divisors, whose sum is σ = 33410361600. Its totient is φ = 3060428800.

The previous prime is 12457058539. The next prime is 12457058557. The reversal of 12457058550 is 5585075421.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12457058557) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 29730241 + ... + 29730659.

It is an arithmetic number, because the mean of its divisors is an integer number (174012300).

Almost surely, 2^12457058550 is an apocalyptic number.

12457058550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12457058550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16705180800).

12457058550 is an abundant number, since it is smaller than the sum of its proper divisors (20953303050).

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

12457058550 is a wasteful number, since it uses less digits than its factorization.

12457058550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 671 (or 666 counting only the distinct ones).

The product of its (nonzero) digits is 280000, while the sum is 42.

The spelling of 12457058550 in words is "twelve billion, four hundred fifty-seven million, fifty-eight thousand, five hundred fifty".