673779377909 has 8 divisors (see below), whose sum is σ = 754897780128. Its totient is φ = 595971930960.

The previous prime is 673779377897. The next prime is 673779377923. The reversal of 673779377909 is 909773977376.

673779377909 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 673779377909 - 2⁴ = 673779377893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673779377939) 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, 827738387 + ... + 827739200.

It is an arithmetic number, because the mean of its divisors is an integer number (94362222516).

Almost surely, 2^673779377909 is an apocalyptic number.

It is an amenable number.

673779377909 is a deficient number, since it is larger than the sum of its proper divisors (81118402219).

673779377909 is a wasteful number, since it uses less digits than its factorization.

673779377909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1655477635.

The product of its (nonzero) digits is 661624362, while the sum is 74.

The spelling of 673779377909 in words is "six hundred seventy-three billion, seven hundred seventy-nine million, three hundred seventy-seven thousand, nine hundred nine".