634315045501 has 4 divisors (see below), whose sum is σ = 634336527100. Its totient is φ = 634293563904.

The previous prime is 634315045471. The next prime is 634315045531. The reversal of 634315045501 is 105540513436.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (634315045471) and next prime (634315045531).

It can be written as a sum of positive squares in 2 ways, for example, as 537363768601 + 96951276900 = 733051^2 + 311370^2 .

It is a cyclic number.

It is not a de Polignac number, because 634315045501 - 2¹⁹ = 634314521213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634315045531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10696446 + ... + 10755583.

It is an arithmetic number, because the mean of its divisors is an integer number (158584131775).

Almost surely, 2^634315045501 is an apocalyptic number.

It is an amenable number.

634315045501 is a deficient number, since it is larger than the sum of its proper divisors (21481599).

634315045501 is a wasteful number, since it uses less digits than its factorization.

634315045501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21481598.

The product of its (nonzero) digits is 108000, while the sum is 37.

Adding to 634315045501 its reverse (105540513436), we get a palindrome (739855558937).

The spelling of 634315045501 in words is "six hundred thirty-four billion, three hundred fifteen million, forty-five thousand, five hundred one".