21301725030 has 32 divisors (see below), whose sum is σ = 51593176800. Its totient is φ = 5628344832.

The previous prime is 21301725019. The next prime is 21301725079. The reversal of 21301725030 is 3052710312.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3253875 + ... + 3260414.

It is an arithmetic number, because the mean of its divisors is an integer number (1612286775).

Almost surely, 2^21301725030 is an apocalyptic number.

21301725030 is an abundant number, since it is smaller than the sum of its proper divisors (30291451770).

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

21301725030 is a wasteful number, since it uses less digits than its factorization.

21301725030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6514408.

The product of its (nonzero) digits is 1260, while the sum is 24.

The spelling of 21301725030 in words is "twenty-one billion, three hundred one million, seven hundred twenty-five thousand, thirty".