20553201101511 has 24 divisors (see below), whose sum is σ = 31983052892336. Its totient is φ = 12643611200640.

The previous prime is 20553201101501. The next prime is 20553201101513. The reversal of 20553201101511 is 11510110235502.

It is a happy number.

20553201101511 is a `hidden beast` number, since 2 + 0 + 5 + 5 + 32 + 0 + 110 + 1 + 511 = 666.

It is not a de Polignac number, because 20553201101511 - 2³¹ = 20551053617863 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20553201101513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31007830 + ... + 31663731.

Almost surely, 2^{20553201101511} is an apocalyptic number.

20553201101511 is a deficient number, since it is larger than the sum of its proper divisors (11429851790825).

20553201101511 is a wasteful number, since it uses less digits than its factorization.

20553201101511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62674383 (or 62674380 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 27.

The spelling of 20553201101511 in words is "twenty trillion, five hundred fifty-three billion, two hundred one million, one hundred one thousand, five hundred eleven".