12071527557 has 8 divisors (see below), whose sum is σ = 16469681184. Its totient is φ = 7860529488.

The previous prime is 12071527547. The next prime is 12071527579. The reversal of 12071527557 is 75572517021.

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

It is not a de Polignac number, because 12071527557 - 2¹² = 12071523461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12071527547) 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, 46788738 + ... + 46788995.

It is an arithmetic number, because the mean of its divisors is an integer number (2058710148).

Almost surely, 2^12071527557 is an apocalyptic number.

It is an amenable number.

12071527557 is a deficient number, since it is larger than the sum of its proper divisors (4398153627).

12071527557 is an equidigital number, since it uses as much as digits as its factorization.

12071527557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93577779.

The product of its (nonzero) digits is 171500, while the sum is 42.

The spelling of 12071527557 in words is "twelve billion, seventy-one million, five hundred twenty-seven thousand, five hundred fifty-seven".