74777761127 has 16 divisors (see below), whose sum is σ = 81344842272. Its totient is φ = 68452945920.

The previous prime is 74777761099. The next prime is 74777761171. The reversal of 74777761127 is 72116777747.

It is a cyclic number.

It is not a de Polignac number, because 74777761127 - 2²⁰ = 74776712551 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 (74777751127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1919927 + ... + 1958487.

It is an arithmetic number, because the mean of its divisors is an integer number (5084052642).

Almost surely, 2^74777761127 is an apocalyptic number.

74777761127 is a deficient number, since it is larger than the sum of its proper divisors (6567081145).

74777761127 is a wasteful number, since it uses less digits than its factorization.

74777761127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41698.

The product of its digits is 5647152, while the sum is 56.

The spelling of 74777761127 in words is "seventy-four billion, seven hundred seventy-seven million, seven hundred sixty-one thousand, one hundred twenty-seven".