20002454553 has 16 divisors (see below), whose sum is σ = 26855628800. Its totient is φ = 13242384144.

The previous prime is 20002454543. The next prime is 20002454557. The reversal of 20002454553 is 35545420002.

It is a de Polignac number, because none of the positive numbers 2^k-20002454553 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20002454553.

It is not an unprimeable number, because it can be changed into a prime (20002454557) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 280200 + ... + 344262.

It is an arithmetic number, because the mean of its divisors is an integer number (1678476800).

Almost surely, 2^20002454553 is an apocalyptic number.

It is an amenable number.

20002454553 is a deficient number, since it is larger than the sum of its proper divisors (6853174247).

20002454553 is a wasteful number, since it uses less digits than its factorization.

20002454553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64788.

The product of its (nonzero) digits is 24000, while the sum is 30.

Adding to 20002454553 its reverse (35545420002), we get a palindrome (55547874555).

The spelling of 20002454553 in words is "twenty billion, two million, four hundred fifty-four thousand, five hundred fifty-three".