21463233275 has 12 divisors (see below), whose sum is σ = 29033901384. Its totient is φ = 15609624000.

The previous prime is 21463233271. The next prime is 21463233277. The reversal of 21463233275 is 57233236412.

It is not a de Polignac number, because 21463233275 - 2² = 21463233271 is a prime.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21463233271) 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, 39023786 + ... + 39024335.

It is an arithmetic number, because the mean of its divisors is an integer number (2419491782).

Almost surely, 2^21463233275 is an apocalyptic number.

21463233275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

21463233275 is a deficient number, since it is larger than the sum of its proper divisors (7570668109).

21463233275 is a wasteful number, since it uses less digits than its factorization.

21463233275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78048142 (or 78048137 counting only the distinct ones).

The product of its digits is 181440, while the sum is 38.

Adding to 21463233275 its reverse (57233236412), we get a palindrome (78696469687).

The spelling of 21463233275 in words is "twenty-one billion, four hundred sixty-three million, two hundred thirty-three thousand, two hundred seventy-five".