124626799640 has 128 divisors (see below), whose sum is σ = 328682188800. Its totient is φ = 41636613120.

The previous prime is 124626799639. The next prime is 124626799643. The reversal of 124626799640 is 46997626421.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124626799643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10176641 + ... + 10188879.

It is an arithmetic number, because the mean of its divisors is an integer number (2567829600).

Almost surely, 2^124626799640 is an apocalyptic number.

124626799640 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 124626799640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (164341094400).

124626799640 is an abundant number, since it is smaller than the sum of its proper divisors (204055389160).

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

124626799640 is a wasteful number, since it uses less digits than its factorization.

124626799640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13185 (or 13181 counting only the distinct ones).

The product of its (nonzero) digits is 7838208, while the sum is 56.

The spelling of 124626799640 in words is "one hundred twenty-four billion, six hundred twenty-six million, seven hundred ninety-nine thousand, six hundred forty".