634354643111 has 32 divisors (see below), whose sum is σ = 768904396800. Its totient is φ = 511610916960.

The previous prime is 634354643107. The next prime is 634354643137. The reversal of 634354643111 is 111346453436.

It is a cyclic number.

It is not a de Polignac number, because 634354643111 - 2² = 634354643107 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 (634354643171) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3354830 + ... + 3538868.

It is an arithmetic number, because the mean of its divisors is an integer number (24028262400).

Almost surely, 2^634354643111 is an apocalyptic number.

634354643111 is a deficient number, since it is larger than the sum of its proper divisors (134549753689).

634354643111 is a wasteful number, since it uses less digits than its factorization.

634354643111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184419.

The product of its digits is 311040, while the sum is 41.

The spelling of 634354643111 in words is "six hundred thirty-four billion, three hundred fifty-four million, six hundred forty-three thousand, one hundred eleven".