137277863817 has 4 divisors (see below), whose sum is σ = 183037151760. Its totient is φ = 91518575876.

The previous prime is 137277863791. The next prime is 137277863819. The reversal of 137277863817 is 718368772731.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 137277863817 - 2¹¹ = 137277861769 is a prime.

It is not an unprimeable number, because it can be changed into a prime (137277863819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22879643967 + ... + 22879643972.

It is an arithmetic number, because the mean of its divisors is an integer number (45759287940).

Almost surely, 2^137277863817 is an apocalyptic number.

It is an amenable number.

137277863817 is a deficient number, since it is larger than the sum of its proper divisors (45759287943).

137277863817 is an equidigital number, since it uses as much as digits as its factorization.

137277863817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45759287942.

The product of its digits is 16595712, while the sum is 60.

The spelling of 137277863817 in words is "one hundred thirty-seven billion, two hundred seventy-seven million, eight hundred sixty-three thousand, eight hundred seventeen".