21275526033 has 24 divisors (see below), whose sum is σ = 32073941952. Its totient is φ = 13564259808.

The previous prime is 21275526023. The next prime is 21275526053. The reversal of 21275526033 is 33062557212.

21275526033 is a `hidden beast` number, since 2 + 12 + 7 + 552 + 60 + 33 = 666.

It is not a de Polignac number, because 21275526033 - 2⁴ = 21275526017 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21275526023) 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 23 ways as a sum of consecutive naturals, for example, 1675135 + ... + 1687787.

It is an arithmetic number, because the mean of its divisors is an integer number (1336414248).

Almost surely, 2^21275526033 is an apocalyptic number.

21275526033 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

21275526033 is a deficient number, since it is larger than the sum of its proper divisors (10798415919).

21275526033 is a wasteful number, since it uses less digits than its factorization.

21275526033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20805 (or 20802 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 36.

The spelling of 21275526033 in words is "twenty-one billion, two hundred seventy-five million, five hundred twenty-six thousand, thirty-three".