506949695977 has 2 divisors, whose sum is σ = 506949695978. Its totient is φ = 506949695976.

The previous prime is 506949695909. The next prime is 506949696041. The reversal of 506949695977 is 779596949605.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 299213376016 + 207736319961 = 547004^2 + 455781^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-506949695977 is a prime.

It is not a weakly prime, because it can be changed into another prime (506949695177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 253474847988 + 253474847989.

It is an arithmetic number, because the mean of its divisors is an integer number (253474847989).

Almost surely, 2^506949695977 is an apocalyptic number.

It is an amenable number.

506949695977 is a deficient number, since it is larger than the sum of its proper divisors (1).

506949695977 is an equidigital number, since it uses as much as digits as its factorization.

506949695977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1157360400, while the sum is 76.

The spelling of 506949695977 in words is "five hundred six billion, nine hundred forty-nine million, six hundred ninety-five thousand, nine hundred seventy-seven".