21063455182 has 48 divisors (see below), whose sum is σ = 39718949760. Its totient is φ = 8200518480.

The previous prime is 21063455137. The next prime is 21063455197. The reversal of 21063455182 is 28155436012.

It is a congruent number.

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, 2820169 + ... + 2827627.

It is an arithmetic number, because the mean of its divisors is an integer number (827478120).

Almost surely, 2^21063455182 is an apocalyptic number.

21063455182 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21063455182 is a deficient number, since it is larger than the sum of its proper divisors (18655494578).

21063455182 is a wasteful number, since it uses less digits than its factorization.

21063455182 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9157 (or 9146 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 37.

The spelling of 21063455182 in words is "twenty-one billion, sixty-three million, four hundred fifty-five thousand, one hundred eighty-two".