634432541145646 has 32 divisors (see below), whose sum is σ = 974605178071008. Its totient is φ = 309576667962240.

The previous prime is 634432541145547. The next prime is 634432541145659. The reversal of 634432541145646 is 646541145234436.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3145934056 + ... + 3146135716.

It is an arithmetic number, because the mean of its divisors is an integer number (30456411814719).

Almost surely, 2^{634432541145646} is an apocalyptic number.

634432541145646 is a deficient number, since it is larger than the sum of its proper divisors (340172636925362).

634432541145646 is a wasteful number, since it uses less digits than its factorization.

634432541145646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232516.

The product of its digits is 99532800, while the sum is 58.

The spelling of 634432541145646 in words is "six hundred thirty-four trillion, four hundred thirty-two billion, five hundred forty-one million, one hundred forty-five thousand, six hundred forty-six".