21048032575 has 24 divisors (see below), whose sum is σ = 26392873248. Its totient is φ = 16649902080.

The previous prime is 21048032569. The next prime is 21048032581. The reversal of 21048032575 is 57523084012.

It is an interprime number because it is at equal distance from previous prime (21048032569) and next prime (21048032581).

It is not a de Polignac number, because 21048032575 - 2⁹ = 21048032063 is a prime.

It is a super-2 number, since 2×21048032575² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1214622 + ... + 1231828.

It is an arithmetic number, because the mean of its divisors is an integer number (1099703052).

Almost surely, 2^21048032575 is an apocalyptic number.

21048032575 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

21048032575 is a deficient number, since it is larger than the sum of its proper divisors (5344840673).

21048032575 is a wasteful number, since it uses less digits than its factorization.

21048032575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17763 (or 17758 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 37.

The spelling of 21048032575 in words is "twenty-one billion, forty-eight million, thirty-two thousand, five hundred seventy-five".