774177731047 has 6 divisors (see below), whose sum is σ = 884777210264. Its totient is φ = 663578916960.

The previous prime is 774177730987. The next prime is 774177731051. The reversal of 774177731047 is 740137771477.

It is not a de Polignac number, because 774177731047 - 2¹⁵ = 774177698279 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 (774177731077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2161647 + ... + 2494207.

Almost surely, 2^774177731047 is an apocalyptic number.

774177731047 is a deficient number, since it is larger than the sum of its proper divisors (110599479217).

774177731047 is an frugal number, since it uses more digits than its factorization.

774177731047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 665129 (or 332568 counting only the distinct ones).

The product of its (nonzero) digits is 5647152, while the sum is 55.

The spelling of 774177731047 in words is "seven hundred seventy-four billion, one hundred seventy-seven million, seven hundred thirty-one thousand, forty-seven".