20011352553 has 24 divisors (see below), whose sum is σ = 29405656800. Its totient is φ = 13110123264.

The previous prime is 20011352549. The next prime is 20011352563. The reversal of 20011352553 is 35525311002.

It is a happy number.

20011352553 is a `hidden beast` number, since 20 + 0 + 113 + 525 + 5 + 3 = 666.

It is not a de Polignac number, because 20011352553 - 2² = 20011352549 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20011352533) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2129401 + ... + 2138777.

It is an arithmetic number, because the mean of its divisors is an integer number (1225235700).

Almost surely, 2^20011352553 is an apocalyptic number.

It is an amenable number.

20011352553 is a deficient number, since it is larger than the sum of its proper divisors (9394304247).

20011352553 is a wasteful number, since it uses less digits than its factorization.

20011352553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13461 (or 13458 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

Adding to 20011352553 its reverse (35525311002), we get a palindrome (55536663555).

The spelling of 20011352553 in words is "twenty billion, eleven million, three hundred fifty-two thousand, five hundred fifty-three".