634712699513 has 2 divisors, whose sum is σ = 634712699514. Its totient is φ = 634712699512.

The previous prime is 634712699473. The next prime is 634712699527. The reversal of 634712699513 is 315996217436.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 564281908969 + 70430790544 = 751187^2 + 265388^2 .

It is a cyclic number.

It is not a de Polignac number, because 634712699513 - 2¹² = 634712695417 is a prime.

It is a super-3 number, since 3×634712699513³ (a number of 36 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (634712699573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317356349756 + 317356349757.

It is an arithmetic number, because the mean of its divisors is an integer number (317356349757).

Almost surely, 2^634712699513 is an apocalyptic number.

It is an amenable number.

634712699513 is a deficient number, since it is larger than the sum of its proper divisors (1).

634712699513 is an equidigital number, since it uses as much as digits as its factorization.

634712699513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7348320, while the sum is 56.

The spelling of 634712699513 in words is "six hundred thirty-four billion, seven hundred twelve million, six hundred ninety-nine thousand, five hundred thirteen".