21301330740 has 24 divisors (see below), whose sum is σ = 59643726240. Its totient is φ = 5680354848.

The previous prime is 21301330733. The next prime is 21301330783. The reversal of 21301330740 is 4703310312.

It is a self number, because there is not a number n which added to its sum of digits gives 21301330740.

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, 177511030 + ... + 177511149.

It is an arithmetic number, because the mean of its divisors is an integer number (2485155260).

Almost surely, 2^21301330740 is an apocalyptic number.

21301330740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21301330740 is an abundant number, since it is smaller than the sum of its proper divisors (38342395500).

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

21301330740 is a wasteful number, since it uses less digits than its factorization.

21301330740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355022191 (or 355022189 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 24.

The spelling of 21301330740 in words is "twenty-one billion, three hundred one million, three hundred thirty thousand, seven hundred forty".