66075311577572 has 24 divisors (see below), whose sum is σ = 126143993180352. Its totient is φ = 30034180980000.

The previous prime is 66075311577571. The next prime is 66075311577631. The reversal of 66075311577572 is 27577511357066.

It is not an unprimeable number, because it can be changed into a prime (66075311577571) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38293913 + ... + 39982175.

It is an arithmetic number, because the mean of its divisors is an integer number (5255999715848).

Almost surely, 2^{66075311577572} is an apocalyptic number.

It is an amenable number.

66075311577572 is a deficient number, since it is larger than the sum of its proper divisors (60068681602780).

66075311577572 is a wasteful number, since it uses less digits than its factorization.

66075311577572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2577779 (or 2577777 counting only the distinct ones).

The product of its (nonzero) digits is 64827000, while the sum is 62.

The spelling of 66075311577572 in words is "sixty-six trillion, seventy-five billion, three hundred eleven million, five hundred seventy-seven thousand, five hundred seventy-two".