21119529078720 has 672 divisors, whose sum is σ = 75032557966080. Its totient is φ = 5449215098880.

The previous prime is 21119529078709. The next prime is 21119529078829. The reversal of 21119529078720 is 2787092591112.

21119529078720 is a `hidden beast` number, since 2 + 1 + 1 + 19 + 529 + 0 + 7 + 87 + 20 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 10502002515 + ... + 10502004525.

Almost surely, 2^{21119529078720} is an apocalyptic number.

21119529078720 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 21119529078720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37516278983040).

21119529078720 is an abundant number, since it is smaller than the sum of its proper divisors (53913028887360).

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

21119529078720 is a wasteful number, since it uses less digits than its factorization.

21119529078720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2833 (or 2820 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 54.

The spelling of 21119529078720 in words is "twenty-one trillion, one hundred nineteen billion, five hundred twenty-nine million, seventy-eight thousand, seven hundred twenty".