21301066475 has 48 divisors (see below), whose sum is σ = 30185568000. Its totient is φ = 14790779520.

The previous prime is 21301066447. The next prime is 21301066483. The reversal of 21301066475 is 57466010312.

It is not a de Polignac number, because 21301066475 - 2²⁶ = 21233957611 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 416876 + ... + 465174.

It is an arithmetic number, because the mean of its divisors is an integer number (628866000).

Almost surely, 2^21301066475 is an apocalyptic number.

21301066475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

21301066475 is a deficient number, since it is larger than the sum of its proper divisors (8884501525).

21301066475 is a wasteful number, since it uses less digits than its factorization.

21301066475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48404 (or 48399 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 35.

Adding to 21301066475 its reverse (57466010312), we get a palindrome (78767076787).

The spelling of 21301066475 in words is "twenty-one billion, three hundred one million, sixty-six thousand, four hundred seventy-five".