21041631330 has 32 divisors (see below), whose sum is σ = 50512374144. Its totient is φ = 5609717376.

The previous prime is 21041631313. The next prime is 21041631383. The reversal of 21041631330 is 3313614012.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 21041631330.

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, 40147 + ... + 209033.

It is an arithmetic number, because the mean of its divisors is an integer number (1578511692).

Almost surely, 2^21041631330 is an apocalyptic number.

21041631330 is an abundant number, since it is smaller than the sum of its proper divisors (29470742814).

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

21041631330 is a wasteful number, since it uses less digits than its factorization.

21041631330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173050.

The product of its (nonzero) digits is 1296, while the sum is 24.

The spelling of 21041631330 in words is "twenty-one billion, forty-one million, six hundred thirty-one thousand, three hundred thirty".