77863044454 has 16 divisors (see below), whose sum is σ = 125805933792. Its totient is φ = 35929027008.

The previous prime is 77863044439. The next prime is 77863044461. The reversal of 77863044454 is 45444036877.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 199879 + ... + 442354.

It is an arithmetic number, because the mean of its divisors is an integer number (7862870862).

Almost surely, 2^77863044454 is an apocalyptic number.

77863044454 is a deficient number, since it is larger than the sum of its proper divisors (47942889338).

77863044454 is a wasteful number, since it uses less digits than its factorization.

77863044454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 646911.

The product of its (nonzero) digits is 9031680, while the sum is 52.

The spelling of 77863044454 in words is "seventy-seven billion, eight hundred sixty-three million, forty-four thousand, four hundred fifty-four".