21062600630240 has 72 divisors (see below), whose sum is σ = 53882556873768. Its totient is φ = 7776960222720.

The previous prime is 21062600630209. The next prime is 21062600630257. The reversal of 21062600630240 is 4203600626012.

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 = 21062600630197 and 21062600630206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 389444126 + ... + 389498205.

It is an arithmetic number, because the mean of its divisors is an integer number (748368845469).

Almost surely, 2^{21062600630240} is an apocalyptic number.

21062600630240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21062600630240 is an abundant number, since it is smaller than the sum of its proper divisors (32819956243528).

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

21062600630240 is a wasteful number, since it uses less digits than its factorization.

21062600630240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 778942372 (or 778942351 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 32.

The spelling of 21062600630240 in words is "twenty-one trillion, sixty-two billion, six hundred million, six hundred thirty thousand, two hundred forty".