10420205553 has 40 divisors (see below), whose sum is σ = 16128459776. Its totient is φ = 6697468800.

The previous prime is 10420205533. The next prime is 10420205561. The reversal of 10420205553 is 35550202401.

It is a happy number.

10420205553 is a `hidden beast` number, since 104 + 2 + 0 + 2 + 0 + 5 + 553 = 666.

It is not a de Polignac number, because 10420205553 - 2¹⁷ = 10420074481 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (10420205533) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 672825 + ... + 688137.

Almost surely, 2^10420205553 is an apocalyptic number.

It is an amenable number.

10420205553 is a deficient number, since it is larger than the sum of its proper divisors (5708254223).

10420205553 is a wasteful number, since it uses less digits than its factorization.

10420205553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15627 (or 15618 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

Adding to 10420205553 its reverse (35550202401), we get a palindrome (45970407954).

The spelling of 10420205553 in words is "ten billion, four hundred twenty million, two hundred five thousand, five hundred fifty-three".