21442206574716 has 48 divisors (see below), whose sum is σ = 51501335838624. Its totient is φ = 6940251242496.

The previous prime is 21442206574703. The next prime is 21442206574721. The reversal of 21442206574716 is 61747560224412.

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, 173722645 + ... + 173846028.

It is an arithmetic number, because the mean of its divisors is an integer number (1072944496638).

Almost surely, 2^{21442206574716} is an apocalyptic number.

It is an amenable number.

21442206574716 is an abundant number, since it is smaller than the sum of its proper divisors (30059129263908).

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

21442206574716 is a wasteful number, since it uses less digits than its factorization.

21442206574716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347568830 (or 347568828 counting only the distinct ones).

The product of its (nonzero) digits is 4515840, while the sum is 51.

The spelling of 21442206574716 in words is "twenty-one trillion, four hundred forty-two billion, two hundred six million, five hundred seventy-four thousand, seven hundred sixteen".