6621465453 has 4 divisors (see below), whose sum is σ = 8828620608. Its totient is φ = 4414310300.

The previous prime is 6621465373. The next prime is 6621465493. The reversal of 6621465453 is 3545641266.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6621465453 - 2⁸ = 6621465197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6621465493) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1103577573 + ... + 1103577578.

It is an arithmetic number, because the mean of its divisors is an integer number (2207155152).

Almost surely, 2^6621465453 is an apocalyptic number.

It is an amenable number.

6621465453 is a deficient number, since it is larger than the sum of its proper divisors (2207155155).

6621465453 is a wasteful number, since it uses less digits than its factorization.

6621465453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2207155154.

The product of its digits is 518400, while the sum is 42.

The square root of 6621465453 is about 81372.3875341015. The cubic root of 6621465453 is about 1877.8088109377.

The spelling of 6621465453 in words is "six billion, six hundred twenty-one million, four hundred sixty-five thousand, four hundred fifty-three".