21072926459600 has 240 divisors, whose sum is σ = 52417568299008. Its totient is φ = 8136315371520.

The previous prime is 21072926459561. The next prime is 21072926459621. The reversal of 21072926459600 is 695462927012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 561372032 + ... + 561409568.

Almost surely, 2^{21072926459600} is an apocalyptic number.

21072926459600 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 21072926459600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26208784149504).

21072926459600 is an abundant number, since it is smaller than the sum of its proper divisors (31344641839408).

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

21072926459600 is a wasteful number, since it uses less digits than its factorization.

21072926459600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37982 (or 37971 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 53.

The spelling of 21072926459600 in words is "twenty-one trillion, seventy-two billion, nine hundred twenty-six million, four hundred fifty-nine thousand, six hundred".