77907627840 has 112 divisors (see below), whose sum is σ = 282693416832. Its totient is φ = 17807456256.

The previous prime is 77907627839. The next prime is 77907627851. The reversal of 77907627840 is 4872670977.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (112).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5789979 + ... + 5803418.

Almost surely, 2^77907627840 is an apocalyptic number.

77907627840 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

77907627840 is an abundant number, since it is smaller than the sum of its proper divisors (204785788992).

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

77907627840 is a wasteful number, since it uses less digits than its factorization.

77907627840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11593424 (or 11593414 counting only the distinct ones).

The product of its (nonzero) digits is 8297856, while the sum is 57.

The spelling of 77907627840 in words is "seventy-seven billion, nine hundred seven million, six hundred twenty-seven thousand, eight hundred forty".