21459116375 has 16 divisors (see below), whose sum is σ = 26806915200. Its totient is φ = 17150666400.

The previous prime is 21459116359. The next prime is 21459116377. The reversal of 21459116375 is 57361195412.

It is not a de Polignac number, because 21459116375 - 2⁴ = 21459116359 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21459116377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47261 + ... + 212489.

It is an arithmetic number, because the mean of its divisors is an integer number (1675432200).

Almost surely, 2^21459116375 is an apocalyptic number.

21459116375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

21459116375 is a deficient number, since it is larger than the sum of its proper divisors (5347798825).

21459116375 is a wasteful number, since it uses less digits than its factorization.

21459116375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166283 (or 166273 counting only the distinct ones).

The product of its digits is 226800, while the sum is 44.

The spelling of 21459116375 in words is "twenty-one billion, four hundred fifty-nine million, one hundred sixteen thousand, three hundred seventy-five".