11547553057 has 4 divisors (see below), whose sum is σ = 11547840276. Its totient is φ = 11547265840.

The previous prime is 11547553051. The next prime is 11547553067. The reversal of 11547553057 is 75035574511.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7971632656 + 3575920401 = 89284^2 + 59799^2 .

It is a cyclic number.

It is not a de Polignac number, because 11547553057 - 2³ = 11547553049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11547553051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71098 + ... + 167779.

It is an arithmetic number, because the mean of its divisors is an integer number (2886960069).

Almost surely, 2^11547553057 is an apocalyptic number.

It is an amenable number.

11547553057 is a deficient number, since it is larger than the sum of its proper divisors (287219).

11547553057 is an equidigital number, since it uses as much as digits as its factorization.

11547553057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287218.

The product of its (nonzero) digits is 367500, while the sum is 43.

The spelling of 11547553057 in words is "eleven billion, five hundred forty-seven million, five hundred fifty-three thousand, fifty-seven".