77442141552 has 40 divisors (see below), whose sum is σ = 200279550336. Its totient is φ = 25785571776.

The previous prime is 77442141541. The next prime is 77442141571. The reversal of 77442141552 is 25514124477.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 845868 + ... + 932939.

Almost surely, 2^77442141552 is an apocalyptic number.

It is an amenable number.

77442141552 is an abundant number, since it is smaller than the sum of its proper divisors (122837408784).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77442141552 is a wasteful number, since it uses less digits than its factorization.

77442141552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1779725 (or 1779719 counting only the distinct ones).

The product of its digits is 313600, while the sum is 42.

The spelling of 77442141552 in words is "seventy-seven billion, four hundred forty-two million, one hundred forty-one thousand, five hundred fifty-two".