634342953481 has 4 divisors (see below), whose sum is σ = 642372611200. Its totient is φ = 626313295764.

The previous prime is 634342953457. The next prime is 634342953493. The reversal of 634342953481 is 184359243436.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 634342953481 - 2¹⁵ = 634342920713 is a prime.

It is a super-2 number, since 2×634342953481² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (634342953421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4014828741 + ... + 4014828898.

It is an arithmetic number, because the mean of its divisors is an integer number (160593152800).

Almost surely, 2^634342953481 is an apocalyptic number.

It is an amenable number.

634342953481 is a deficient number, since it is larger than the sum of its proper divisors (8029657719).

634342953481 is an equidigital number, since it uses as much as digits as its factorization.

634342953481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8029657718.

The product of its digits is 7464960, while the sum is 52.

The spelling of 634342953481 in words is "six hundred thirty-four billion, three hundred forty-two million, nine hundred fifty-three thousand, four hundred eighty-one".