77541420884 has 24 divisors (see below), whose sum is σ = 143701387200. Its totient is φ = 36484570496.

The previous prime is 77541420857. The next prime is 77541420893. The reversal of 77541420884 is 48802414577.

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, 386489 + ... + 551775.

It is an arithmetic number, because the mean of its divisors is an integer number (5987557800).

Almost surely, 2^77541420884 is an apocalyptic number.

It is an amenable number.

77541420884 is a deficient number, since it is larger than the sum of its proper divisors (66159966316).

77541420884 is a wasteful number, since it uses less digits than its factorization.

77541420884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172207 (or 172205 counting only the distinct ones).

The product of its (nonzero) digits is 2007040, while the sum is 50.

The spelling of 77541420884 in words is "seventy-seven billion, five hundred forty-one million, four hundred twenty thousand, eight hundred eighty-four".