77495763349 has 4 divisors (see below), whose sum is σ = 77497185964. Its totient is φ = 77494340736.

The previous prime is 77495763337. The next prime is 77495763377. The reversal of 77495763349 is 94336759477.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94336759477 = 25169 ⋅3748133.

It can be written as a sum of positive squares in 2 ways, for example, as 62105624100 + 15390139249 = 249210^2 + 124057^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77495763349 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 (77495763379) 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, 626202 + ... + 739675.

It is an arithmetic number, because the mean of its divisors is an integer number (19374296491).

Almost surely, 2^77495763349 is an apocalyptic number.

It is an amenable number.

77495763349 is a deficient number, since it is larger than the sum of its proper divisors (1422615).

77495763349 is a wasteful number, since it uses less digits than its factorization.

77495763349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1422614.

The product of its digits is 120022560, while the sum is 64.

The spelling of 77495763349 in words is "seventy-seven billion, four hundred ninety-five million, seven hundred sixty-three thousand, three hundred forty-nine".