642016132646 has 24 divisors (see below), whose sum is σ = 1136972839896. Its totient is φ = 271043055360.

The previous prime is 642016132601. The next prime is 642016132651. The reversal of 642016132646 is 646231610246.

It is a super-2 number, since 2×642016132646² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48882875 + ... + 48896006.

It is an arithmetic number, because the mean of its divisors is an integer number (47373868329).

Almost surely, 2^642016132646 is an apocalyptic number.

642016132646 is a deficient number, since it is larger than the sum of its proper divisors (494956707250).

642016132646 is a wasteful number, since it uses less digits than its factorization.

642016132646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97778964 (or 97778957 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 41.

The spelling of 642016132646 in words is "six hundred forty-two billion, sixteen million, one hundred thirty-two thousand, six hundred forty-six".