21373650344106 has 24 divisors (see below), whose sum is σ = 46476758340324. Its totient is φ = 7098829715520.

The previous prime is 21373650344077. The next prime is 21373650344119. The reversal of 21373650344106 is 60144305637312.

21373650344106 is a `hidden beast` number, since 2 + 1 + 3 + 7 + 36 + 503 + 4 + 4 + 106 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 21083167072881 + 290483271225 = 4591641^2 + 538965^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2143361475 + ... + 2143371446.

Almost surely, 2^{21373650344106} is an apocalyptic number.

21373650344106 is an abundant number, since it is smaller than the sum of its proper divisors (25103107996218).

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

21373650344106 is a wasteful number, since it uses less digits than its factorization.

21373650344106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4286733206 (or 4286733203 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 45.

The spelling of 21373650344106 in words is "twenty-one trillion, three hundred seventy-three billion, six hundred fifty million, three hundred forty-four thousand, one hundred six".