8420663053 has 4 divisors (see below), whose sum is σ = 9186177888. Its totient is φ = 7655148220.

The previous prime is 8420663003. The next prime is 8420663063. The reversal of 8420663053 is 3503660248.

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 8420663053 - 2²¹ = 8418565901 is a prime.

It is a super-4 number, since 4×8420663053⁴ (a number of 41 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8420663003) 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, 382757401 + ... + 382757422.

It is an arithmetic number, because the mean of its divisors is an integer number (2296544472).

Almost surely, 2^8420663053 is an apocalyptic number.

It is an amenable number.

8420663053 is a deficient number, since it is larger than the sum of its proper divisors (765514835).

8420663053 is a wasteful number, since it uses less digits than its factorization.

8420663053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 765514834.

The product of its (nonzero) digits is 103680, while the sum is 37.

The square root of 8420663053 is about 91764.1708566039. The cubic root of 8420663053 is about 2034.4581624040.

The spelling of 8420663053 in words is "eight billion, four hundred twenty million, six hundred sixty-three thousand, fifty-three".