66776027332 has 36 divisors (see below), whose sum is σ = 138501781740. Its totient is φ = 28078325184.

The previous prime is 66776027323. The next prime is 66776027363. The reversal of 66776027332 is 23372067766.

It can be written as a sum of positive squares in 2 ways, for example, as 60100483716 + 6675543616 = 245154^2 + 81704^2 .

It is a super-2 number, since 2×66776027332² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3203707 + ... + 3224482.

It is an arithmetic number, because the mean of its divisors is an integer number (3847271715).

Almost surely, 2^66776027332 is an apocalyptic number.

It is an amenable number.

66776027332 is an abundant number, since it is smaller than the sum of its proper divisors (71725754408).

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

66776027332 is a wasteful number, since it uses less digits than its factorization.

66776027332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6428260 (or 6428251 counting only the distinct ones).

The product of its (nonzero) digits is 2667168, while the sum is 49.

The spelling of 66776027332 in words is "sixty-six billion, seven hundred seventy-six million, twenty-seven thousand, three hundred thirty-two".