21250124335040 has 56 divisors (see below), whose sum is σ = 50665349593152. Its totient is φ = 8489384576000.

The previous prime is 21250124335019. The next prime is 21250124335067. The reversal of 21250124335040 is 4053342105212.

It is a super-3 number, since 3×21250124335040³ (a number of 41 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 21250124334988 and 21250124335006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41405336 + ... + 41915415.

It is an arithmetic number, because the mean of its divisors is an integer number (904738385592).

Almost surely, 2^{21250124335040} is an apocalyptic number.

21250124335040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21250124335040 is an abundant number, since it is smaller than the sum of its proper divisors (29415225258112).

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

21250124335040 is an equidigital number, since it uses as much as digits as its factorization.

21250124335040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83321565 (or 83321555 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 32.

The spelling of 21250124335040 in words is "twenty-one trillion, two hundred fifty billion, one hundred twenty-four million, three hundred thirty-five thousand, forty".