634147357845 has 16 divisors (see below), whose sum is σ = 1014928511040. Its totient is φ = 338114344704.

The previous prime is 634147357843. The next prime is 634147357867. The reversal of 634147357845 is 548753741436.

It is not a de Polignac number, because 634147357845 - 2¹ = 634147357843 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634147357843) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6044980 + ... + 6148989.

It is an arithmetic number, because the mean of its divisors is an integer number (63433031940).

Almost surely, 2^634147357845 is an apocalyptic number.

It is an amenable number.

634147357845 is a deficient number, since it is larger than the sum of its proper divisors (380781153195).

634147357845 is a wasteful number, since it uses less digits than its factorization.

634147357845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12197444.

The product of its digits is 33868800, while the sum is 57.

The spelling of 634147357845 in words is "six hundred thirty-four billion, one hundred forty-seven million, three hundred fifty-seven thousand, eight hundred forty-five".