13165549377 has 8 divisors (see below), whose sum is σ = 18586658016. Its totient is φ = 8260736832.

The previous prime is 13165549351. The next prime is 13165549399. The reversal of 13165549377 is 77394556131.

It is a happy number.

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

It is not a de Polignac number, because 13165549377 - 2¹⁰ = 13165548353 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51), and also a Moran number because the ratio is a prime number: 258148027 = 13165549377 / (1 + 3 + 1 + 6 + 5 + 5 + 4 + 9 + 3 + 7 + 7).

It is not an unprimeable number, because it can be changed into a prime (13165549477) 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, 129073963 + ... + 129074064.

It is an arithmetic number, because the mean of its divisors is an integer number (2323332252).

Almost surely, 2^13165549377 is an apocalyptic number.

13165549377 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

13165549377 is a deficient number, since it is larger than the sum of its proper divisors (5421108639).

13165549377 is a wasteful number, since it uses less digits than its factorization.

13165549377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258148047.

The product of its digits is 2381400, while the sum is 51.

The spelling of 13165549377 in words is "thirteen billion, one hundred sixty-five million, five hundred forty-nine thousand, three hundred seventy-seven".