77056617349 has 8 divisors (see below), whose sum is σ = 82430488728. Its totient is φ = 71776204800.

The previous prime is 77056617347. The next prime is 77056617367. The reversal of 77056617349 is 94371665077.

It can be written as a sum of positive squares in 4 ways, for example, as 4079376900 + 72977240449 = 63870^2 + 270143^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 77056617349 - 2¹ = 77056617347 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 77056617349.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77056617347) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23363002 + ... + 23366299.

It is an arithmetic number, because the mean of its divisors is an integer number (10303811091).

Almost surely, 2^77056617349 is an apocalyptic number.

It is an amenable number.

77056617349 is a deficient number, since it is larger than the sum of its proper divisors (5373871379).

77056617349 is a wasteful number, since it uses less digits than its factorization.

77056617349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46729415.

The product of its (nonzero) digits is 6667920, while the sum is 55.

The spelling of 77056617349 in words is "seventy-seven billion, fifty-six million, six hundred seventeen thousand, three hundred forty-nine".