377778816343 has 16 divisors (see below), whose sum is σ = 400512215520. Its totient is φ = 355334069376.

The previous prime is 377778816293. The next prime is 377778816377. The reversal of 377778816343 is 343618877773.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 377778816343 - 2⁹ = 377778815831 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 (377778816143) 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, 3759705 + ... + 3858877.

It is an arithmetic number, because the mean of its divisors is an integer number (25032013470).

Almost surely, 2^377778816343 is an apocalyptic number.

377778816343 is a deficient number, since it is larger than the sum of its proper divisors (22733399177).

377778816343 is a wasteful number, since it uses less digits than its factorization.

377778816343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100626.

The product of its digits is 99574272, while the sum is 64.

The spelling of 377778816343 in words is "three hundred seventy-seven billion, seven hundred seventy-eight million, eight hundred sixteen thousand, three hundred forty-three".