21295898375 has 16 divisors (see below), whose sum is σ = 27732818880. Its totient is φ = 16295989600.

The previous prime is 21295898363. The next prime is 21295898381. The reversal of 21295898375 is 57389859212.

It is not a de Polignac number, because 21295898375 - 2⁸ = 21295898119 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3700760 + ... + 3706509.

It is an arithmetic number, because the mean of its divisors is an integer number (1733301180).

Almost surely, 2^21295898375 is an apocalyptic number.

21295898375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

21295898375 is a deficient number, since it is larger than the sum of its proper divisors (6436920505).

21295898375 is an equidigital number, since it uses as much as digits as its factorization.

21295898375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7407307 (or 7407297 counting only the distinct ones).

The product of its digits is 10886400, while the sum is 59.

The spelling of 21295898375 in words is "twenty-one billion, two hundred ninety-five million, eight hundred ninety-eight thousand, three hundred seventy-five".