634342787243436 has 72 divisors (see below), whose sum is σ = 1530907240303056. Its totient is φ = 204422395057920.

The previous prime is 634342787243419. The next prime is 634342787243467.

634342787243436 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×634342787243436² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 120393775 + ... + 125552166.

Almost surely, 2^{634342787243436} is an apocalyptic number.

It is an amenable number.

634342787243436 is an abundant number, since it is smaller than the sum of its proper divisors (896564453059620).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

634342787243436 is a wasteful number, since it uses less digits than its factorization.

634342787243436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245946179 (or 245946140 counting only the distinct ones).

The product of its digits is 1170505728, while the sum is 66.

The spelling of 634342787243436 in words is "six hundred thirty-four trillion, three hundred forty-two billion, seven hundred eighty-seven million, two hundred forty-three thousand, four hundred thirty-six".