21062617306005 has 48 divisors (see below), whose sum is σ = 37068209156160. Its totient is φ = 10205050394880.

The previous prime is 21062617305973. The next prime is 21062617306019. The reversal of 21062617306005 is 50060371626012.

It is not a de Polignac number, because 21062617306005 - 2⁵ = 21062617305973 is a prime.

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 47 ways as a sum of consecutive naturals, for example, 1448215 + ... + 6650004.

It is an arithmetic number, because the mean of its divisors is an integer number (772254357420).

Almost surely, 2^{21062617306005} is an apocalyptic number.

It is an amenable number.

21062617306005 is a deficient number, since it is larger than the sum of its proper divisors (16005591850155).

21062617306005 is a wasteful number, since it uses less digits than its factorization.

21062617306005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8099682 (or 8099671 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 39.

The spelling of 21062617306005 in words is "twenty-one trillion, sixty-two billion, six hundred seventeen million, three hundred six thousand, five".