21296496593 has 8 divisors (see below), whose sum is σ = 21919955112. Its totient is φ = 20675558016.

The previous prime is 21296496587. The next prime is 21296496601. The reversal of 21296496593 is 39569469212.

It can be written as a sum of positive squares in 4 ways, for example, as 9569339329 + 11727157264 = 97823^2 + 108292^2 .

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 21296496593 - 2⁴ = 21296496577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21292496593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 612830 + ... + 646647.

It is an arithmetic number, because the mean of its divisors is an integer number (2739994389).

Almost surely, 2^21296496593 is an apocalyptic number.

It is an amenable number.

21296496593 is a deficient number, since it is larger than the sum of its proper divisors (623458519).

21296496593 is a wasteful number, since it uses less digits than its factorization.

21296496593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1259971.

The product of its digits is 6298560, while the sum is 56.

The spelling of 21296496593 in words is "twenty-one billion, two hundred ninety-six million, four hundred ninety-six thousand, five hundred ninety-three".