66492044077 has 8 divisors (see below), whose sum is σ = 67109497400. Its totient is φ = 65874726144.

The previous prime is 66492044041. The next prime is 66492044089. The reversal of 66492044077 is 77044029466.

It can be written as a sum of positive squares in 4 ways, for example, as 19862392356 + 46629651721 = 140934^2 + 215939^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66492044077 - 2¹⁵ = 66492011309 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 66492044077.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66492144077) 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, 1141033 + ... + 1197889.

It is an arithmetic number, because the mean of its divisors is an integer number (8388687175).

Almost surely, 2^66492044077 is an apocalyptic number.

It is an amenable number.

66492044077 is a deficient number, since it is larger than the sum of its proper divisors (617453323).

66492044077 is a wasteful number, since it uses less digits than its factorization.

66492044077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67695.

The product of its (nonzero) digits is 2032128, while the sum is 49.

The spelling of 66492044077 in words is "sixty-six billion, four hundred ninety-two million, forty-four thousand, seventy-seven".