21463766005 has 16 divisors (see below), whose sum is σ = 29576865600. Its totient is φ = 14788431360.

The previous prime is 21463766003. The next prime is 21463766011. The reversal of 21463766005 is 50066736412.

It is not a de Polignac number, because 21463766005 - 2¹ = 21463766003 is a prime.

It is a super-2 number, since 2×21463766005² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21463766003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10268700 + ... + 10270789.

It is an arithmetic number, because the mean of its divisors is an integer number (1848554100).

Almost surely, 2^21463766005 is an apocalyptic number.

It is an amenable number.

21463766005 is a deficient number, since it is larger than the sum of its proper divisors (8113099595).

21463766005 is a wasteful number, since it uses less digits than its factorization.

21463766005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20539524.

The product of its (nonzero) digits is 181440, while the sum is 40.

The spelling of 21463766005 in words is "twenty-one billion, four hundred sixty-three million, seven hundred sixty-six thousand, five".