8420743052953 has 96 divisors (see below), whose sum is σ = 11318734622720. Its totient is φ = 6114096172800.

The previous prime is 8420743052903. The next prime is 8420743052977. The reversal of 8420743052953 is 3592503470248.

It is a happy number.

It is not a de Polignac number, because 8420743052953 - 2⁹ = 8420743052441 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8420743052953.

It is not an unprimeable number, because it can be changed into a prime (8420743052903) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 431137798 + ... + 431157328.

Almost surely, 2^{8420743052953} is an apocalyptic number.

It is an amenable number.

8420743052953 is a deficient number, since it is larger than the sum of its proper divisors (2897991569767).

8420743052953 is a wasteful number, since it uses less digits than its factorization.

8420743052953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20019 (or 20008 counting only the distinct ones).

The product of its (nonzero) digits is 7257600, while the sum is 52.

The spelling of 8420743052953 in words is "eight trillion, four hundred twenty billion, seven hundred forty-three million, fifty-two thousand, nine hundred fifty-three".