21589743363 has 16 divisors (see below), whose sum is σ = 28841713920. Its totient is φ = 14365495584.

The previous prime is 21589743347. The next prime is 21589743391. The reversal of 21589743363 is 36334798512.

It is not a de Polignac number, because 21589743363 - 2⁴ = 21589743347 is a prime.

It is a super-2 number, since 2×21589743363² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21589743313) 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, 5377945 + ... + 5381957.

It is an arithmetic number, because the mean of its divisors is an integer number (1802607120).

Almost surely, 2^21589743363 is an apocalyptic number.

21589743363 is a deficient number, since it is larger than the sum of its proper divisors (7251970557).

21589743363 is a wasteful number, since it uses less digits than its factorization.

21589743363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7018.

The product of its digits is 3265920, while the sum is 51.

The spelling of 21589743363 in words is "twenty-one billion, five hundred eighty-nine million, seven hundred forty-three thousand, three hundred sixty-three".