21161200359 has 8 divisors (see below), whose sum is σ = 30385313392. Its totient is φ = 13022277120.

The previous prime is 21161200351. The next prime is 21161200387. The reversal of 21161200359 is 95300216112.

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

It is not a de Polignac number, because 21161200359 - 2³ = 21161200351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21161200351) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 271297402 + ... + 271297479.

It is an arithmetic number, because the mean of its divisors is an integer number (3798164174).

Almost surely, 2^21161200359 is an apocalyptic number.

21161200359 is a deficient number, since it is larger than the sum of its proper divisors (9224113033).

21161200359 is a wasteful number, since it uses less digits than its factorization.

21161200359 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542594897.

The product of its (nonzero) digits is 3240, while the sum is 30.

The spelling of 21161200359 in words is "twenty-one billion, one hundred sixty-one million, two hundred thousand, three hundred fifty-nine".