646432265146634 has 16 divisors (see below), whose sum is σ = 983463430074048. Its totient is φ = 318615916181472.

The previous prime is 646432265146541. The next prime is 646432265146649. The reversal of 646432265146634 is 436641562234646.

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 in 7 ways as a sum of consecutive naturals, for example, 1198327592 + ... + 1198866915.

It is an arithmetic number, because the mean of its divisors is an integer number (61466464379628).

Almost surely, 2^{646432265146634} is an apocalyptic number.

646432265146634 is a deficient number, since it is larger than the sum of its proper divisors (337031164927414).

646432265146634 is a wasteful number, since it uses less digits than its factorization.

646432265146634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2397196429.

The product of its digits is 358318080, while the sum is 62.

The spelling of 646432265146634 in words is "six hundred forty-six trillion, four hundred thirty-two billion, two hundred sixty-five million, one hundred forty-six thousand, six hundred thirty-four".