77545454577 has 16 divisors (see below), whose sum is σ = 103597116480. Its totient is φ = 51595453952.

The previous prime is 77545454563. The next prime is 77545454579.

77545454577 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 77545454577 - 2⁴ = 77545454561 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 77545454577.

It is not an unprimeable number, because it can be changed into a prime (77545454579) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5197993 + ... + 5212889.

It is an arithmetic number, because the mean of its divisors is an integer number (6474819780).

Almost surely, 2^77545454577 is an apocalyptic number.

It is an amenable number.

77545454577 is a deficient number, since it is larger than the sum of its proper divisors (26051661903).

77545454577 is a wasteful number, since it uses less digits than its factorization.

77545454577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18192.

The product of its digits is 96040000, while the sum is 60.

The spelling of 77545454577 in words is "seventy-seven billion, five hundred forty-five million, four hundred fifty-four thousand, five hundred seventy-seven".