21611131300434 has 32 divisors (see below), whose sum is σ = 47007913950144. Its totient is φ = 6583741444800.

The previous prime is 21611131300403. The next prime is 21611131300459. The reversal of 21611131300434 is 43400313111612.

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, 1371604924 + ... + 1371620679.

It is an arithmetic number, because the mean of its divisors is an integer number (1468997310942).

Almost surely, 2^{21611131300434} is an apocalyptic number.

21611131300434 is an abundant number, since it is smaller than the sum of its proper divisors (25396782649710).

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

21611131300434 is a wasteful number, since it uses less digits than its factorization.

21611131300434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2743225722.

The product of its (nonzero) digits is 5184, while the sum is 30.

The spelling of 21611131300434 in words is "twenty-one trillion, six hundred eleven billion, one hundred thirty-one million, three hundred thousand, four hundred thirty-four".