635116541623 has 2 divisors, whose sum is σ = 635116541624. Its totient is φ = 635116541622.

The previous prime is 635116541621. The next prime is 635116541681. The reversal of 635116541623 is 326145611536.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 635116541623 - 2¹ = 635116541621 is a prime.

Together with 635116541621, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 635116541623.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (635116541621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317558270811 + 317558270812.

It is an arithmetic number, because the mean of its divisors is an integer number (317558270812).

Almost surely, 2^635116541623 is an apocalyptic number.

635116541623 is a deficient number, since it is larger than the sum of its proper divisors (1).

635116541623 is an equidigital number, since it uses as much as digits as its factorization.

635116541623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 388800, while the sum is 43.

The spelling of 635116541623 in words is "six hundred thirty-five billion, one hundred sixteen million, five hundred forty-one thousand, six hundred twenty-three".