77455500555477 has 16 divisors (see below), whose sum is σ = 112669950722112. Its totient is φ = 46939642417920.

The previous prime is 77455500555463. The next prime is 77455500555481.

77455500555477 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 77455500555477 - 2²³ = 77455492166869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77455500559477) 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, 76620018 + ... + 77624339.

It is an arithmetic number, because the mean of its divisors is an integer number (7041871920132).

Almost surely, 2^{77455500555477} is an apocalyptic number.

It is an amenable number.

77455500555477 is a deficient number, since it is larger than the sum of its proper divisors (35214450166635).

77455500555477 is a wasteful number, since it uses less digits than its factorization.

77455500555477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154259588.

The product of its (nonzero) digits is 600250000, while the sum is 66.

The spelling of 77455500555477 in words is "seventy-seven trillion, four hundred fifty-five billion, five hundred million, five hundred fifty-five thousand, four hundred seventy-seven".