21163490592 has 48 divisors (see below), whose sum is σ = 55953868320. Its totient is φ = 7003740672.

The previous prime is 21163490563. The next prime is 21163490597. The reversal of 21163490592 is 29509436112.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (21163490597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 779653 + ... + 806340.

It is an arithmetic number, because the mean of its divisors is an integer number (1165705590).

Almost surely, 2^21163490592 is an apocalyptic number.

It is an amenable number.

21163490592 is an abundant number, since it is smaller than the sum of its proper divisors (34790377728).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21163490592 is a wasteful number, since it uses less digits than its factorization.

21163490592 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1586145 (or 1586137 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 42.

The spelling of 21163490592 in words is "twenty-one billion, one hundred sixty-three million, four hundred ninety thousand, five hundred ninety-two".