634722451346 has 4 divisors (see below), whose sum is σ = 952083677022. Its totient is φ = 317361225672.

The previous prime is 634722451213. The next prime is 634722451367. The reversal of 634722451346 is 643154227436.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 618756865321 + 15965586025 = 786611^2 + 126355^2 .

It is a super-3 number, since 3×634722451346³ (a number of 36 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 634722451346.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158680612835 + ... + 158680612838.

Almost surely, 2^634722451346 is an apocalyptic number.

634722451346 is a deficient number, since it is larger than the sum of its proper divisors (317361225676).

634722451346 is a wasteful number, since it uses less digits than its factorization.

634722451346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317361225675.

The product of its digits is 2903040, while the sum is 47.

The spelling of 634722451346 in words is "six hundred thirty-four billion, seven hundred twenty-two million, four hundred fifty-one thousand, three hundred forty-six".