21662432463 has 16 divisors (see below), whose sum is σ = 33013926656. Its totient is φ = 12376843200.

The previous prime is 21662432431. The next prime is 21662432471. The reversal of 21662432463 is 36423426612.

It is not a de Polignac number, because 21662432463 - 2⁵ = 21662432431 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21662430463) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96288 + ... + 229338.

It is an arithmetic number, because the mean of its divisors is an integer number (2063370416).

Almost surely, 2^21662432463 is an apocalyptic number.

21662432463 is a deficient number, since it is larger than the sum of its proper divisors (11351494193).

21662432463 is a wasteful number, since it uses less digits than its factorization.

21662432463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140814.

The product of its digits is 248832, while the sum is 39.

The spelling of 21662432463 in words is "twenty-one billion, six hundred sixty-two million, four hundred thirty-two thousand, four hundred sixty-three".