21460115305 has 8 divisors (see below), whose sum is σ = 25754949000. Its totient is φ = 17166218496.

The previous prime is 21460115263. The next prime is 21460115351. The reversal of 21460115305 is 50351106412.

It can be written as a sum of positive squares in 4 ways, for example, as 4822469136 + 16637646169 = 69444^2 + 128987^2 .

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 21460115305 - 2¹³ = 21460107113 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 182800 + ... + 276289.

It is an arithmetic number, because the mean of its divisors is an integer number (3219368625).

Almost surely, 2^21460115305 is an apocalyptic number.

It is an amenable number.

21460115305 is a deficient number, since it is larger than the sum of its proper divisors (4294833695).

21460115305 is an equidigital number, since it uses as much as digits as its factorization.

21460115305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468443.

The product of its (nonzero) digits is 3600, while the sum is 28.

The spelling of 21460115305 in words is "twenty-one billion, four hundred sixty million, one hundred fifteen thousand, three hundred five".