673545116555519 has 8 divisors (see below), whose sum is σ = 725356484576640. Its totient is φ = 621733777850016.

The previous prime is 673545116555431. The next prime is 673545116555611. The reversal of 673545116555519 is 915555611545376.

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

It is not a de Polignac number, because 673545116555519 - 2²⁸ = 673544848120063 is a prime.

It is a super-2 number, since 2×673545116555519² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673545116555219) 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, 72995009 + ... + 81702885.

It is an arithmetic number, because the mean of its divisors is an integer number (90669560572080).

Almost surely, 2^{673545116555519} is an apocalyptic number.

673545116555519 is a deficient number, since it is larger than the sum of its proper divisors (51811368021121).

673545116555519 is a wasteful number, since it uses less digits than its factorization.

673545116555519 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14657809.

The product of its digits is 425250000, while the sum is 68.

The spelling of 673545116555519 in words is "six hundred seventy-three trillion, five hundred forty-five billion, one hundred sixteen million, five hundred fifty-five thousand, five hundred nineteen".