21016463061 has 32 divisors (see below), whose sum is σ = 32396029056. Its totient is φ = 11977472000.

The previous prime is 21016463059. The next prime is 21016463107. The reversal of 21016463061 is 16036461012.

It is a cyclic number.

It is not a de Polignac number, because 21016463061 - 2¹ = 21016463059 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21016463161) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 646681 + ... + 678401.

It is an arithmetic number, because the mean of its divisors is an integer number (1012375908).

Almost surely, 2^21016463061 is an apocalyptic number.

It is an amenable number.

21016463061 is a deficient number, since it is larger than the sum of its proper divisors (11379565995).

21016463061 is a wasteful number, since it uses less digits than its factorization.

21016463061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32933.

The product of its (nonzero) digits is 5184, while the sum is 30.

The spelling of 21016463061 in words is "twenty-one billion, sixteen million, four hundred sixty-three thousand, sixty-one".