21607046105 has 8 divisors (see below), whose sum is σ = 26117714952. Its totient is φ = 17159463808.

The previous prime is 21607046093. The next prime is 21607046117. The reversal of 21607046105 is 50164070612.

It is an interprime number because it is at equal distance from previous prime (21607046093) and next prime (21607046117).

It can be written as a sum of positive squares in 4 ways, for example, as 471410944 + 21135635161 = 21712^2 + 145381^2 .

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 21607046105 - 2¹⁴ = 21607029721 is a prime.

It is a Duffinian 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 7 ways as a sum of consecutive naturals, for example, 15770882 + ... + 15772251.

It is an arithmetic number, because the mean of its divisors is an integer number (3264714369).

Almost surely, 2^21607046105 is an apocalyptic number.

It is an amenable number.

21607046105 is a deficient number, since it is larger than the sum of its proper divisors (4510668847).

21607046105 is a wasteful number, since it uses less digits than its factorization.

21607046105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31543275.

The product of its (nonzero) digits is 10080, while the sum is 32.

The spelling of 21607046105 in words is "twenty-one billion, six hundred seven million, forty-six thousand, one hundred five".