634857860445 has 16 divisors (see below), whose sum is σ = 1015784851200. Its totient is φ = 338586767424.

The previous prime is 634857860407. The next prime is 634857860467. The reversal of 634857860445 is 544068758436.

It is a happy number.

It is not a de Polignac number, because 634857860445 - 2²⁵ = 634824306013 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1353756 + ... + 1761354.

It is an arithmetic number, because the mean of its divisors is an integer number (63486553200).

Almost surely, 2^634857860445 is an apocalyptic number.

It is an amenable number.

634857860445 is a deficient number, since it is larger than the sum of its proper divisors (380926990755).

634857860445 is a wasteful number, since it uses less digits than its factorization.

634857860445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511444.

The product of its (nonzero) digits is 77414400, while the sum is 60.

The spelling of 634857860445 in words is "six hundred thirty-four billion, eight hundred fifty-seven million, eight hundred sixty thousand, four hundred forty-five".