21463002536 has 64 divisors (see below), whose sum is σ = 42203851200. Its totient is φ = 10224867328.

The previous prime is 21463002521. The next prime is 21463002541. The reversal of 21463002536 is 63520036412.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2071160 + ... + 2081496.

It is an arithmetic number, because the mean of its divisors is an integer number (659435175).

Almost surely, 2^21463002536 is an apocalyptic number.

It is an amenable number.

21463002536 is a deficient number, since it is larger than the sum of its proper divisors (20740848664).

21463002536 is a wasteful number, since it uses less digits than its factorization.

21463002536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10538 (or 10534 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 32.

Adding to 21463002536 its reverse (63520036412), we get a palindrome (84983038948).

The spelling of 21463002536 in words is "twenty-one billion, four hundred sixty-three million, two thousand, five hundred thirty-six".