66814550952 has 32 divisors (see below), whose sum is σ = 167066059680. Its totient is φ = 22267559360.

The previous prime is 66814550903. The next prime is 66814550963. The reversal of 66814550952 is 25905541866.

It is a happy number.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 66814550895 and 66814550904.

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, 107874 + ... + 381137.

It is an arithmetic number, because the mean of its divisors is an integer number (5220814365).

Almost surely, 2^66814550952 is an apocalyptic number.

It is an amenable number.

66814550952 is an abundant number, since it is smaller than the sum of its proper divisors (100251508728).

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

66814550952 is a wasteful number, since it uses less digits than its factorization.

66814550952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494713 (or 494709 counting only the distinct ones).

The product of its (nonzero) digits is 2592000, while the sum is 51.

The spelling of 66814550952 in words is "sixty-six billion, eight hundred fourteen million, five hundred fifty thousand, nine hundred fifty-two".