12071518057 has 2 divisors, whose sum is σ = 12071518058. Its totient is φ = 12071518056.

The previous prime is 12071517949. The next prime is 12071518061. The reversal of 12071518057 is 75081517021.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9632244736 + 2439273321 = 98144^2 + 49389^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12071518057 is a prime.

It is not a weakly prime, because it can be changed into another prime (12071518087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6035759028 + 6035759029.

It is an arithmetic number, because the mean of its divisors is an integer number (6035759029).

Almost surely, 2^12071518057 is an apocalyptic number.

It is an amenable number.

12071518057 is a deficient number, since it is larger than the sum of its proper divisors (1).

12071518057 is an equidigital number, since it uses as much as digits as its factorization.

12071518057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19600, while the sum is 37.

The spelling of 12071518057 in words is "twelve billion, seventy-one million, five hundred eighteen thousand, fifty-seven".