66432620142 has 36 divisors (see below), whose sum is σ = 167437320336. Its totient is φ = 18980748360.

The previous prime is 66432620123. The next prime is 66432620171. The reversal of 66432620142 is 24102623466.

66432620142 is a `hidden beast` number, since 6 + 643 + 2 + 6 + 2 + 0 + 1 + 4 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 66432620097 and 66432620106.

It is a congruent number.

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 17 ways as a sum of consecutive naturals, for example, 37659334 + ... + 37661097.

It is an arithmetic number, because the mean of its divisors is an integer number (4651036676).

Almost surely, 2^66432620142 is an apocalyptic number.

66432620142 is an abundant number, since it is smaller than the sum of its proper divisors (101004700194).

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

66432620142 is a wasteful number, since it uses less digits than its factorization.

66432620142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75320453 (or 75320443 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 36.

The spelling of 66432620142 in words is "sixty-six billion, four hundred thirty-two million, six hundred twenty thousand, one hundred forty-two".