21134662544244 has 48 divisors (see below), whose sum is σ = 49675048573248. Its totient is φ = 6993341338368.

The previous prime is 21134662544231. The next prime is 21134662544251. The reversal of 21134662544244 is 44244526643112.

It is a junction number, because it is equal to n+sod(n) for n = 21134662544193 and 21134662544202.

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, 174198427 + ... + 174319709.

It is an arithmetic number, because the mean of its divisors is an integer number (1034896845276).

Almost surely, 2^{21134662544244} is an apocalyptic number.

It is an amenable number.

21134662544244 is an abundant number, since it is smaller than the sum of its proper divisors (28540386029004).

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

21134662544244 is a wasteful number, since it uses less digits than its factorization.

21134662544244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227424 (or 227422 counting only the distinct ones).

The product of its digits is 4423680, while the sum is 48.

The spelling of 21134662544244 in words is "twenty-one trillion, one hundred thirty-four billion, six hundred sixty-two million, five hundred forty-four thousand, two hundred forty-four".