124771771728 has 120 divisors (see below), whose sum is σ = 375995131200. Its totient is φ = 38480581632.

The previous prime is 124771771727. The next prime is 124771771759. The reversal of 124771771728 is 827177177421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124771771727) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 287508 + ... + 576371.

It is an arithmetic number, because the mean of its divisors is an integer number (3133292760).

Almost surely, 2^124771771728 is an apocalyptic number.

124771771728 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

124771771728 is an abundant number, since it is smaller than the sum of its proper divisors (251223359472).

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

124771771728 is a wasteful number, since it uses less digits than its factorization.

124771771728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 863969 (or 863960 counting only the distinct ones).

The product of its digits is 2151296, while the sum is 54.

The spelling of 124771771728 in words is "one hundred twenty-four billion, seven hundred seventy-one million, seven hundred seventy-one thousand, seven hundred twenty-eight".