21320930075 has 24 divisors (see below), whose sum is σ = 26534164800. Its totient is φ = 16994799360.

The previous prime is 21320930027. The next prime is 21320930083. The reversal of 21320930075 is 57003902312.

It is not a de Polignac number, because 21320930075 - 2¹² = 21320925979 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14919461 + ... + 14920889.

It is an arithmetic number, because the mean of its divisors is an integer number (1105590200).

Almost surely, 2^21320930075 is an apocalyptic number.

21320930075 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

21320930075 is a deficient number, since it is larger than the sum of its proper divisors (5213234725).

21320930075 is a wasteful number, since it uses less digits than its factorization.

21320930075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3191 (or 3186 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 32.

The spelling of 21320930075 in words is "twenty-one billion, three hundred twenty million, nine hundred thirty thousand, seventy-five".