21620542366714 has 8 divisors (see below), whose sum is σ = 32648470017300. Its totient is φ = 10737719027616.

The previous prime is 21620542366711. The next prime is 21620542366769. The reversal of 21620542366714 is 41766324502612.

It can be written as a sum of positive squares in 2 ways, for example, as 19545833418489 + 2074708948225 = 4421067^2 + 1440385^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (21620542366711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36276077499 + ... + 36276078094.

Almost surely, 2^{21620542366714} is an apocalyptic number.

21620542366714 is a deficient number, since it is larger than the sum of its proper divisors (11027927650586).

21620542366714 is a wasteful number, since it uses less digits than its factorization.

21620542366714 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72552155744.

The product of its (nonzero) digits is 2903040, while the sum is 49.

The spelling of 21620542366714 in words is "twenty-one trillion, six hundred twenty billion, five hundred forty-two million, three hundred sixty-six thousand, seven hundred fourteen".