634620312045 has 48 divisors (see below), whose sum is σ = 1159301769600. Its totient is φ = 320263113600.

The previous prime is 634620312041. The next prime is 634620312071. The reversal of 634620312045 is 540213026436.

634620312045 is a `hidden beast` number, since 6 + 3 + 4 + 620 + 3 + 1 + 20 + 4 + 5 = 666.

It is not a de Polignac number, because 634620312045 - 2² = 634620312041 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634620312041) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 261120 + ... + 1156470.

It is an arithmetic number, because the mean of its divisors is an integer number (24152120200).

Almost surely, 2^634620312045 is an apocalyptic number.

It is an amenable number.

634620312045 is a deficient number, since it is larger than the sum of its proper divisors (524681457555).

634620312045 is a wasteful number, since it uses less digits than its factorization.

634620312045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 896210 (or 896207 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 36.

The spelling of 634620312045 in words is "six hundred thirty-four billion, six hundred twenty million, three hundred twelve thousand, forty-five".