21325303990 has 64 divisors (see below), whose sum is σ = 41482316160. Its totient is φ = 7869030400.

The previous prime is 21325303957. The next prime is 21325303991. The reversal of 21325303990 is 9930352312.

It is a super-3 number, since 3×21325303990³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21325303991) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10677672 + ... + 10679668.

It is an arithmetic number, because the mean of its divisors is an integer number (648161190).

Almost surely, 2^21325303990 is an apocalyptic number.

21325303990 is a deficient number, since it is larger than the sum of its proper divisors (20157012170).

21325303990 is a wasteful number, since it uses less digits than its factorization.

21325303990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3657.

The product of its (nonzero) digits is 43740, while the sum is 37.

The spelling of 21325303990 in words is "twenty-one billion, three hundred twenty-five million, three hundred three thousand, nine hundred ninety".