201511253052 has 36 divisors (see below), whose sum is σ = 516353423040. Its totient is φ = 66250274112.

The previous prime is 201511252967. The next prime is 201511253059. The reversal of 201511253052 is 250352115102.

201511253052 is a `hidden beast` number, since 2 + 0 + 15 + 112 + 530 + 5 + 2 = 666.

201511253052 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201511253059) 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 11 ways as a sum of consecutive naturals, for example, 38336652 + ... + 38341907.

It is an arithmetic number, because the mean of its divisors is an integer number (14343150640).

Almost surely, 2^201511253052 is an apocalyptic number.

It is an amenable number.

201511253052 is an abundant number, since it is smaller than the sum of its proper divisors (314842169988).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201511253052 is a wasteful number, since it uses less digits than its factorization.

201511253052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76678642 (or 76678637 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

Adding to 201511253052 its reverse (250352115102), we get a palindrome (451863368154).

The spelling of 201511253052 in words is "two hundred one billion, five hundred eleven million, two hundred fifty-three thousand, fifty-two".