506436660157 has 2 divisors, whose sum is σ = 506436660158. Its totient is φ = 506436660156.

The previous prime is 506436660139. The next prime is 506436660179. The reversal of 506436660157 is 751066634605.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 342686135236 + 163750524921 = 585394^2 + 404661^2 .

It is a cyclic number.

It is not a de Polignac number, because 506436660157 - 2⁷ = 506436660029 is a prime.

It is a super-2 number, since 2×506436660157² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 506436660157.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (506436664157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 253218330078 + 253218330079.

It is an arithmetic number, because the mean of its divisors is an integer number (253218330079).

Almost surely, 2^506436660157 is an apocalyptic number.

It is an amenable number.

506436660157 is a deficient number, since it is larger than the sum of its proper divisors (1).

506436660157 is an equidigital number, since it uses as much as digits as its factorization.

506436660157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2721600, while the sum is 49.

The spelling of 506436660157 in words is "five hundred six billion, four hundred thirty-six million, six hundred sixty thousand, one hundred fifty-seven".