201551241044511 has 48 divisors (see below), whose sum is σ = 295549838172160. Its totient is φ = 132336029404800.

The previous prime is 201551241044501. The next prime is 201551241044603. The reversal of 201551241044511 is 115440142155102.

201551241044511 is a `hidden beast` number, since 2 + 0 + 1 + 5 + 5 + 124 + 10 + 4 + 4 + 511 = 666.

201551241044511 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 201551241044511 - 2¹⁴ = 201551241028127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201551241044501) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1086138186 + ... + 1086323736.

Almost surely, 2^{201551241044511} is an apocalyptic number.

201551241044511 is a deficient number, since it is larger than the sum of its proper divisors (93998597127649).

201551241044511 is a wasteful number, since it uses less digits than its factorization.

201551241044511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189436 (or 189433 counting only the distinct ones).

The product of its (nonzero) digits is 32000, while the sum is 36.

Adding to 201551241044511 its reverse (115440142155102), we get a palindrome (316991383199613).

The spelling of 201551241044511 in words is "two hundred one trillion, five hundred fifty-one billion, two hundred forty-one million, forty-four thousand, five hundred eleven".