64629433492646 has 192 divisors, whose sum is σ = 111076862561280. Its totient is φ = 28166411750400.

The previous prime is 64629433492643. The next prime is 64629433492669.

64629433492646 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64629433492643) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 45417731891 + ... + 45417733313.

It is an arithmetic number, because the mean of its divisors is an integer number (578525325840).

Almost surely, 2^{64629433492646} is an apocalyptic number.

64629433492646 is a deficient number, since it is larger than the sum of its proper divisors (46447429068634).

64629433492646 is a wasteful number, since it uses less digits than its factorization.

64629433492646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2011 (or 2000 counting only the distinct ones).

The product of its digits is 967458816, while the sum is 68.

The spelling of 64629433492646 in words is "sixty-four trillion, six hundred twenty-nine billion, four hundred thirty-three million, four hundred ninety-two thousand, six hundred forty-six".