11571532953 has 8 divisors (see below), whose sum is σ = 16336281888. Its totient is φ = 7260569664.

The previous prime is 11571532939. The next prime is 11571532997. The reversal of 11571532953 is 35923517511.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11571532953 - 2⁸ = 11571532697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11571532913) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113446351 + ... + 113446452.

It is an arithmetic number, because the mean of its divisors is an integer number (2042035236).

Almost surely, 2^11571532953 is an apocalyptic number.

It is an amenable number.

11571532953 is a deficient number, since it is larger than the sum of its proper divisors (4764748935).

11571532953 is a wasteful number, since it uses less digits than its factorization.

11571532953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226892823.

The product of its digits is 141750, while the sum is 42.

The spelling of 11571532953 in words is "eleven billion, five hundred seventy-one million, five hundred thirty-two thousand, nine hundred fifty-three".