634263425501 has 2 divisors, whose sum is σ = 634263425502. Its totient is φ = 634263425500.

The previous prime is 634263425483. The next prime is 634263425513. The reversal of 634263425501 is 105524362436.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 593745761401 + 40517664100 = 770549^2 + 201290^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-634263425501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (634263425561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317131712750 + 317131712751.

It is an arithmetic number, because the mean of its divisors is an integer number (317131712751).

Almost surely, 2^634263425501 is an apocalyptic number.

It is an amenable number.

634263425501 is a deficient number, since it is larger than the sum of its proper divisors (1).

634263425501 is an equidigital number, since it uses as much as digits as its factorization.

634263425501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 518400, while the sum is 41.

Adding to 634263425501 its reverse (105524362436), we get a palindrome (739787787937).

The spelling of 634263425501 in words is "six hundred thirty-four billion, two hundred sixty-three million, four hundred twenty-five thousand, five hundred one".