21839110275 has 12 divisors (see below), whose sum is σ = 36107329112. Its totient is φ = 11647525440.

The previous prime is 21839110253. The next prime is 21839110277. The reversal of 21839110275 is 57201193812.

It is a happy number.

It is not a de Polignac number, because 21839110275 - 2⁶ = 21839110211 is a prime.

It is a super-2 number, since 2×21839110275² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21839110277) 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, 145593994 + ... + 145594143.

Almost surely, 2^21839110275 is an apocalyptic number.

21839110275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

21839110275 is a deficient number, since it is larger than the sum of its proper divisors (14268218837).

21839110275 is a wasteful number, since it uses less digits than its factorization.

21839110275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291188150 (or 291188145 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 39.

The spelling of 21839110275 in words is "twenty-one billion, eight hundred thirty-nine million, one hundred ten thousand, two hundred seventy-five".