635487111797 has 2 divisors, whose sum is σ = 635487111798. Its totient is φ = 635487111796.

The previous prime is 635487111761. The next prime is 635487111799. The reversal of 635487111797 is 797111784536.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 604103572081 + 31383539716 = 777241^2 + 177154^2 .

It is a cyclic number.

It is not a de Polignac number, because 635487111797 - 2⁶ = 635487111733 is a prime.

Together with 635487111799, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (635487111799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317743555898 + 317743555899.

It is an arithmetic number, because the mean of its divisors is an integer number (317743555899).

Almost surely, 2^635487111797 is an apocalyptic number.

It is an amenable number.

635487111797 is a deficient number, since it is larger than the sum of its proper divisors (1).

635487111797 is an equidigital number, since it uses as much as digits as its factorization.

635487111797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8890560, while the sum is 59.

The spelling of 635487111797 in words is "six hundred thirty-five billion, four hundred eighty-seven million, one hundred eleven thousand, seven hundred ninety-seven".