21050425445 has 8 divisors (see below), whose sum is σ = 28869154944. Its totient is φ = 14434577424.

The previous prime is 21050425439. The next prime is 21050425453. The reversal of 21050425445 is 54452405012.

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 21050425445 - 2⁶ = 21050425381 is a prime.

It is a super-2 number, since 2×21050425445² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 300720329 + ... + 300720398.

It is an arithmetic number, because the mean of its divisors is an integer number (3608644368).

Almost surely, 2^21050425445 is an apocalyptic number.

It is an amenable number.

21050425445 is a deficient number, since it is larger than the sum of its proper divisors (7818729499).

21050425445 is an equidigital number, since it uses as much as digits as its factorization.

21050425445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601440739.

The product of its (nonzero) digits is 32000, while the sum is 32.

The spelling of 21050425445 in words is "twenty-one billion, fifty million, four hundred twenty-five thousand, four hundred forty-five".