21416863088406 has 32 divisors (see below), whose sum is σ = 42912682122240. Its totient is φ = 7125805181024.

The previous prime is 21416863088371. The next prime is 21416863088407. The reversal of 21416863088406 is 60488036861412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21416863088407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7188565 + ... + 9721583.

It is an arithmetic number, because the mean of its divisors is an integer number (1341021316320).

Almost surely, 2^{21416863088406} is an apocalyptic number.

21416863088406 is an abundant number, since it is smaller than the sum of its proper divisors (21495819033834).

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

21416863088406 is a wasteful number, since it uses less digits than its factorization.

21416863088406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2535620.

The product of its (nonzero) digits is 10616832, while the sum is 57.

The spelling of 21416863088406 in words is "twenty-one trillion, four hundred sixteen billion, eight hundred sixty-three million, eighty-eight thousand, four hundred six".