21763043479 has 12 divisors (see below), whose sum is σ = 22975397280. Its totient is φ = 20611656000.

The previous prime is 21763043473. The next prime is 21763043483. The reversal of 21763043479 is 97434036712.

It is not a de Polignac number, because 21763043479 - 2⁹ = 21763042967 is a prime.

It is a super-2 number, since 2×21763043479² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21763043473) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1708767 + ... + 1721455.

It is an arithmetic number, because the mean of its divisors is an integer number (1914616440).

Almost surely, 2^21763043479 is an apocalyptic number.

21763043479 is a deficient number, since it is larger than the sum of its proper divisors (1212353801).

21763043479 is a wasteful number, since it uses less digits than its factorization.

21763043479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17478 (or 17459 counting only the distinct ones).

The product of its (nonzero) digits is 762048, while the sum is 46.

The spelling of 21763043479 in words is "twenty-one billion, seven hundred sixty-three million, forty-three thousand, four hundred seventy-nine".