66770627832 has 64 divisors (see below), whose sum is σ = 189420249600. Its totient is φ = 21783322080.

The previous prime is 66770627783. The next prime is 66770627837. The reversal of 66770627832 is 23872607766.

66770627832 is a `hidden beast` number, since 6 + 6 + 7 + 7 + 0 + 627 + 8 + 3 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66770627837) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 3278394 + ... + 3298697.

It is an arithmetic number, because the mean of its divisors is an integer number (2959691400).

Almost surely, 2^66770627832 is an apocalyptic number.

It is an amenable number.

66770627832 is an abundant number, since it is smaller than the sum of its proper divisors (122649621768).

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

66770627832 is a wasteful number, since it uses less digits than its factorization.

66770627832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6577153 (or 6577143 counting only the distinct ones).

The product of its (nonzero) digits is 7112448, while the sum is 54.

The spelling of 66770627832 in words is "sixty-six billion, seven hundred seventy million, six hundred twenty-seven thousand, eight hundred thirty-two".