21336076325 has 6 divisors (see below), whose sum is σ = 26456734674. Its totient is φ = 17068861040.

The previous prime is 21336076309. The next prime is 21336076357. The reversal of 21336076325 is 52367063312.

It can be written as a sum of positive squares in 3 ways, for example, as 5773264324 + 15562812001 = 75982^2 + 124751^2 .

It is not a de Polignac number, because 21336076325 - 2⁴ = 21336076309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 426721502 + ... + 426721551.

It is an arithmetic number, because the mean of its divisors is an integer number (4409455779).

Almost surely, 2^21336076325 is an apocalyptic number.

21336076325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

21336076325 is a deficient number, since it is larger than the sum of its proper divisors (5120658349).

21336076325 is an equidigital number, since it uses as much as digits as its factorization.

21336076325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 853443063 (or 853443058 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 38.

The spelling of 21336076325 in words is "twenty-one billion, three hundred thirty-six million, seventy-six thousand, three hundred twenty-five".