77045653617673 has 8 divisors (see below), whose sum is σ = 82984134707208. Its totient is φ = 71108871435264.

The previous prime is 77045653617671. The next prime is 77045653617701. The reversal of 77045653617673 is 37671635654077.

It can be written as a sum of positive squares in 4 ways, for example, as 4953531276409 + 72092122341264 = 2225653^2 + 8490708^2 .

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

It is not a de Polignac number, because 77045653617673 - 2¹ = 77045653617671 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 77045653617599 and 77045653617608.

It is not an unprimeable number, because it can be changed into a prime (77045653617671) by changing a digit.

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, 424632586 + ... + 424813987.

It is an arithmetic number, because the mean of its divisors is an integer number (10373016838401).

Almost surely, 2^{77045653617673} is an apocalyptic number.

It is an amenable number.

77045653617673 is a deficient number, since it is larger than the sum of its proper divisors (5938481089535).

77045653617673 is a wasteful number, since it uses less digits than its factorization.

77045653617673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 849453563.

The product of its (nonzero) digits is 466754400, while the sum is 67.

The spelling of 77045653617673 in words is "seventy-seven trillion, forty-five billion, six hundred fifty-three million, six hundred seventeen thousand, six hundred seventy-three".