77387107838 has 16 divisors (see below), whose sum is σ = 122914409040. Its totient is φ = 36415840896.

The previous prime is 77387107813. The next prime is 77387107841. The reversal of 77387107838 is 83870178377.

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, 1108145 + ... + 1175907.

It is an arithmetic number, because the mean of its divisors is an integer number (7682150565).

Almost surely, 2^77387107838 is an apocalyptic number.

77387107838 is a deficient number, since it is larger than the sum of its proper divisors (45527301202).

77387107838 is a wasteful number, since it uses less digits than its factorization.

77387107838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101371.

The product of its (nonzero) digits is 11063808, while the sum is 59.

The spelling of 77387107838 in words is "seventy-seven billion, three hundred eighty-seven million, one hundred seven thousand, eight hundred thirty-eight".