673845265511 has 16 divisors (see below), whose sum is σ = 755252553600. Its totient is φ = 595808405280.

The previous prime is 673845265507. The next prime is 673845265609. The reversal of 673845265511 is 115562548376.

It is a happy number.

673845265511 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 673845265511 - 2² = 673845265507 is a prime.

It is a super-2 number, since 2×673845265511² (a number of 24 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 (673845265411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 791780 + ... + 1405206.

It is an arithmetic number, because the mean of its divisors is an integer number (47203284600).

Almost surely, 2^673845265511 is an apocalyptic number.

673845265511 is a deficient number, since it is larger than the sum of its proper divisors (81407288089).

673845265511 is a wasteful number, since it uses less digits than its factorization.

673845265511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 616174.

The product of its digits is 6048000, while the sum is 53.

The spelling of 673845265511 in words is "six hundred seventy-three billion, eight hundred forty-five million, two hundred sixty-five thousand, five hundred eleven".