501717140572649 has 2 divisors, whose sum is σ = 501717140572650. Its totient is φ = 501717140572648.

The previous prime is 501717140572597. The next prime is 501717140572657. The reversal of 501717140572649 is 946275041717105.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 501560973340249 + 156167232400 = 22395557^2 + 395180^2 .

It is a cyclic number.

It is not a de Polignac number, because 501717140572649 - 2⁴⁴ = 484124954528233 is a prime.

It is not a weakly prime, because it can be changed into another prime (501717140575649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250858570286324 + 250858570286325.

It is an arithmetic number, because the mean of its divisors is an integer number (250858570286325).

Almost surely, 2^{501717140572649} is an apocalyptic number.

It is an amenable number.

501717140572649 is a deficient number, since it is larger than the sum of its proper divisors (1).

501717140572649 is an equidigital number, since it uses as much as digits as its factorization.

501717140572649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14817600, while the sum is 59.

The spelling of 501717140572649 in words is "five hundred one trillion, seven hundred seventeen billion, one hundred forty million, five hundred seventy-two thousand, six hundred forty-nine".