277291138913 has 2 divisors, whose sum is σ = 277291138914. Its totient is φ = 277291138912.

The previous prime is 277291138907. The next prime is 277291138979. The reversal of 277291138913 is 319831192772.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 260321387089 + 16969751824 = 510217^2 + 130268^2 .

It is a cyclic number.

It is not a de Polignac number, because 277291138913 - 2¹⁶ = 277291073377 is a prime.

It is not a weakly prime, because it can be changed into another prime (277291132913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 138645569456 + 138645569457.

It is an arithmetic number, because the mean of its divisors is an integer number (138645569457).

Almost surely, 2^277291138913 is an apocalyptic number.

It is an amenable number.

277291138913 is a deficient number, since it is larger than the sum of its proper divisors (1).

277291138913 is an equidigital number, since it uses as much as digits as its factorization.

277291138913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1143072, while the sum is 53.

The spelling of 277291138913 in words is "two hundred seventy-seven billion, two hundred ninety-one million, one hundred thirty-eight thousand, nine hundred thirteen".