77545454444 has 12 divisors (see below), whose sum is σ = 136568906544. Its totient is φ = 38525766864.

The previous prime is 77545454443. The next prime is 77545454461. The reversal of 77545454444 is 44445454577.

It is not an unprimeable number, because it can be changed into a prime (77545454443) 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 3 ways as a sum of consecutive naturals, for example, 61739384 + ... + 61740639.

It is an arithmetic number, because the mean of its divisors is an integer number (11380742212).

Almost surely, 2^77545454444 is an apocalyptic number.

It is an amenable number.

77545454444 is a deficient number, since it is larger than the sum of its proper divisors (59023452100).

77545454444 is a wasteful number, since it uses less digits than its factorization.

77545454444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123480184 (or 123480182 counting only the distinct ones).

The product of its digits is 25088000, while the sum is 53.

The spelling of 77545454444 in words is "seventy-seven billion, five hundred forty-five million, four hundred fifty-four thousand, four hundred forty-four".