21468887496 has 96 divisors (see below), whose sum is σ = 66936579840. Its totient is φ = 6089174784.

The previous prime is 21468887483. The next prime is 21468887509. The reversal of 21468887496 is 69478886412.

21468887496 is a `hidden beast` number, since 2 + 1 + 4 + 68 + 8 + 87 + 496 = 666.

It is an interprime number because it is at equal distance from previous prime (21468887483) and next prime (21468887509).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 86416 + ... + 224511.

It is an arithmetic number, because the mean of its divisors is an integer number (697256040).

Almost surely, 2^21468887496 is an apocalyptic number.

It is an amenable number.

21468887496 is an abundant number, since it is smaller than the sum of its proper divisors (45467692344).

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

21468887496 is a wasteful number, since it uses less digits than its factorization.

21468887496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311083 (or 311076 counting only the distinct ones).

The product of its digits is 37158912, while the sum is 63.

The spelling of 21468887496 in words is "twenty-one billion, four hundred sixty-eight million, eight hundred eighty-seven thousand, four hundred ninety-six".