66362021442 has 32 divisors (see below), whose sum is σ = 147480580800. Its totient is φ = 22119260544.

The previous prime is 66362021431. The next prime is 66362021483. The reversal of 66362021442 is 24412026366.

66362021442 is a `hidden beast` number, since 6 + 6 + 3 + 6 + 202 + 1 + 442 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 66362021397 and 66362021406.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1137234 + ... + 1194162.

It is an arithmetic number, because the mean of its divisors is an integer number (4608768150).

Almost surely, 2^66362021442 is an apocalyptic number.

66362021442 is an abundant number, since it is smaller than the sum of its proper divisors (81118559358).

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

66362021442 is a wasteful number, since it uses less digits than its factorization.

66362021442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78527 (or 78521 counting only the distinct ones).

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

The spelling of 66362021442 in words is "sixty-six billion, three hundred sixty-two million, twenty-one thousand, four hundred forty-two".