12028315157 has 2 divisors, whose sum is σ = 12028315158. Its totient is φ = 12028315156.

The previous prime is 12028315147. The next prime is 12028315241. The reversal of 12028315157 is 75151382021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11380409041 + 647906116 = 106679^2 + 25454^2 .

It is a cyclic number.

It is not a de Polignac number, because 12028315157 - 2¹⁸ = 12028053013 is a prime.

It is a super-2 number, since 2×12028315157² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12028315147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6014157578 + 6014157579.

It is an arithmetic number, because the mean of its divisors is an integer number (6014157579).

Almost surely, 2^12028315157 is an apocalyptic number.

It is an amenable number.

12028315157 is a deficient number, since it is larger than the sum of its proper divisors (1).

12028315157 is an equidigital number, since it uses as much as digits as its factorization.

12028315157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16800, while the sum is 35.

Adding to 12028315157 its reverse (75151382021), we get a palindrome (87179697178).

The spelling of 12028315157 in words is "twelve billion, twenty-eight million, three hundred fifteen thousand, one hundred fifty-seven".