66452777004 has 24 divisors (see below), whose sum is σ = 155070039040. Its totient is φ = 22148988624.

The previous prime is 66452776991. The next prime is 66452777063. The reversal of 66452777004 is 40077725466.

It is a happy number.

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 7 ways as a sum of consecutive naturals, for example, 95644 + ... + 376899.

Almost surely, 2^66452777004 is an apocalyptic number.

It is an amenable number.

66452777004 is an abundant number, since it is smaller than the sum of its proper divisors (88617262036).

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

66452777004 is a wasteful number, since it uses less digits than its factorization.

66452777004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484269 (or 484267 counting only the distinct ones).

The product of its (nonzero) digits is 1975680, while the sum is 48.

The spelling of 66452777004 in words is "sixty-six billion, four hundred fifty-two million, seven hundred seventy-seven thousand, four".