634914913969 has 16 divisors (see below), whose sum is σ = 750978095616. Its totient is φ = 525465676800.

The previous prime is 634914913949. The next prime is 634914913981. The reversal of 634914913969 is 969319419436.

It is a cyclic number.

It is not a de Polignac number, because 634914913969 - 2²³ = 634906525361 is a prime.

It is a super-2 number, since 2×634914913969² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 634914913969.

It is not an unprimeable number, because it can be changed into a prime (634914913939) 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, 11375497 + ... + 11431174.

It is an arithmetic number, because the mean of its divisors is an integer number (46936130976).

Almost surely, 2^634914913969 is an apocalyptic number.

It is an amenable number.

634914913969 is a deficient number, since it is larger than the sum of its proper divisors (116063181647).

634914913969 is a wasteful number, since it uses less digits than its factorization.

634914913969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22806816.

The product of its digits is 34012224, while the sum is 64.

The spelling of 634914913969 in words is "six hundred thirty-four billion, nine hundred fourteen million, nine hundred thirteen thousand, nine hundred sixty-nine".