21893214234672 has 360 divisors, whose sum is σ = 69276433930704. Its totient is φ = 6445587456000.

The previous prime is 21893214234637. The next prime is 21893214234679. The reversal of 21893214234672 is 27643241239812.

21893214234672 is a `hidden beast` number, since 2 + 1 + 8 + 9 + 32 + 142 + 3 + 467 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (21893214234679) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 172102963 + ... + 172230125.

Almost surely, 2^{21893214234672} is an apocalyptic number.

21893214234672 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21893214234672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34638216965352).

21893214234672 is an abundant number, since it is smaller than the sum of its proper divisors (47383219696032).

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

21893214234672 is a wasteful number, since it uses less digits than its factorization.

21893214234672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127481 (or 127461 counting only the distinct ones).

The product of its digits is 6967296, while the sum is 54.

The spelling of 21893214234672 in words is "twenty-one trillion, eight hundred ninety-three billion, two hundred fourteen million, two hundred thirty-four thousand, six hundred seventy-two".