21373650344142 has 48 divisors (see below), whose sum is σ = 46454791088160. Its totient is φ = 7102243754496.

The previous prime is 21373650344119. The next prime is 21373650344147. The reversal of 21373650344142 is 24144305637312.

21373650344142 is a `hidden beast` number, since 2 + 1 + 37 + 36 + 503 + 4 + 41 + 42 = 666.

It is a super-3 number, since 3×21373650344142³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21373650344147) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6010678 + ... + 8881190.

It is an arithmetic number, because the mean of its divisors is an integer number (967808147670).

Almost surely, 2^{21373650344142} is an apocalyptic number.

21373650344142 is an abundant number, since it is smaller than the sum of its proper divisors (25081140744018).

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

21373650344142 is a wasteful number, since it uses less digits than its factorization.

21373650344142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2871817 (or 2871814 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 45.

The spelling of 21373650344142 in words is "twenty-one trillion, three hundred seventy-three billion, six hundred fifty million, three hundred forty-four thousand, one hundred forty-two".