21246460605 has 96 divisors (see below), whose sum is σ = 38955780864. Its totient is φ = 10698283008.

The previous prime is 21246460597. The next prime is 21246460619. The reversal of 21246460605 is 50606464212.

21246460605 is a `hidden beast` number, since 2 + 1 + 2 + 4 + 6 + 46 + 0 + 605 = 666.

It is not a de Polignac number, because 21246460605 - 2³ = 21246460597 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21246460605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 11955477 + ... + 11957253.

It is an arithmetic number, because the mean of its divisors is an integer number (405789384).

Almost surely, 2^21246460605 is an apocalyptic number.

It is an amenable number.

21246460605 is a deficient number, since it is larger than the sum of its proper divisors (17709320259).

21246460605 is a wasteful number, since it uses less digits than its factorization.

21246460605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2035 (or 2032 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The spelling of 21246460605 in words is "twenty-one billion, two hundred forty-six million, four hundred sixty thousand, six hundred five".