21325111590551 has 8 divisors (see below), whose sum is σ = 21469485110400. Its totient is φ = 21180754763872.

The previous prime is 21325111590539. The next prime is 21325111590577. The reversal of 21325111590551 is 15509511152312.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21325111590551 - 2³⁸ = 21050233683607 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21325111590499 and 21325111590508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21325111595551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1604360 + ... + 6724893.

It is an arithmetic number, because the mean of its divisors is an integer number (2683685638800).

Almost surely, 2^{21325111590551} is an apocalyptic number.

21325111590551 is a deficient number, since it is larger than the sum of its proper divisors (144373519849).

21325111590551 is a wasteful number, since it uses less digits than its factorization.

21325111590551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8346585.

The product of its (nonzero) digits is 67500, while the sum is 41.

The spelling of 21325111590551 in words is "twenty-one trillion, three hundred twenty-five billion, one hundred eleven million, five hundred ninety thousand, five hundred fifty-one".