21973486413 has 8 divisors (see below), whose sum is σ = 30012566976. Its totient is φ = 14291698400.

The previous prime is 21973486393. The next prime is 21973486417. The reversal of 21973486413 is 31468437912.

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

It is a cyclic number.

It is not a de Polignac number, because 21973486413 - 2⁹ = 21973485901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21973486417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89322993 + ... + 89323238.

It is an arithmetic number, because the mean of its divisors is an integer number (3751570872).

Almost surely, 2^21973486413 is an apocalyptic number.

It is an amenable number.

21973486413 is a deficient number, since it is larger than the sum of its proper divisors (8039080563).

21973486413 is a wasteful number, since it uses less digits than its factorization.

21973486413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178646275.

The product of its digits is 870912, while the sum is 48.

The spelling of 21973486413 in words is "twenty-one billion, nine hundred seventy-three million, four hundred eighty-six thousand, four hundred thirteen".