6626421745 has 8 divisors (see below), whose sum is σ = 7955976384. Its totient is φ = 5298290544.

The previous prime is 6626421727. The next prime is 6626421751. The reversal of 6626421745 is 5471246266.

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 6626421745 - 2¹³ = 6626413553 is a prime.

It is a Duffinian 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, 345589 + ... + 364258.

It is an arithmetic number, because the mean of its divisors is an integer number (994497048).

Almost surely, 2^6626421745 is an apocalyptic number.

It is an amenable number.

6626421745 is a deficient number, since it is larger than the sum of its proper divisors (1329554639).

6626421745 is a wasteful number, since it uses less digits than its factorization.

6626421745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 711719.

The product of its digits is 483840, while the sum is 43.

The square root of 6626421745 is about 81402.8362220875. The cubic root of 6626421745 is about 1878.2772192114.

The spelling of 6626421745 in words is "six billion, six hundred twenty-six million, four hundred twenty-one thousand, seven hundred forty-five".