21490146753120 has 576 divisors, whose sum is σ = 76371172061184. Its totient is φ = 5498437201920.

The previous prime is 21490146753109. The next prime is 21490146753121. The reversal of 21490146753120 is 2135764109412.

21490146753120 is a `hidden beast` number, since 2 + 1 + 4 + 90 + 1 + 4 + 6 + 7 + 531 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21490146753121) 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 95 ways as a sum of consecutive naturals, for example, 8045729385 + ... + 8045732055.

It is an arithmetic number, because the mean of its divisors is an integer number (132588840384).

Almost surely, 2^{21490146753120} is an apocalyptic number.

21490146753120 is a gapful number since it is divisible by the number (20) 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 21490146753120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38185586030592).

21490146753120 is an abundant number, since it is smaller than the sum of its proper divisors (54881025308064).

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

21490146753120 is a wasteful number, since it uses less digits than its factorization.

21490146753120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5035 (or 5024 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The spelling of 21490146753120 in words is "twenty-one trillion, four hundred ninety billion, one hundred forty-six million, seven hundred fifty-three thousand, one hundred twenty".