77154313888 has 12 divisors (see below), whose sum is σ = 151897555530. Its totient is φ = 38577156928.

The previous prime is 77154313843. The next prime is 77154313913. The reversal of 77154313888 is 88831345177.

It can be written as a sum of positive squares in only one way, i.e., 70656019344 + 6498294544 = 265812^2 + 80612^2 .

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 as a sum of consecutive naturals, namely, 1205536123 + ... + 1205536186.

Almost surely, 2^77154313888 is an apocalyptic number.

It is an amenable number.

77154313888 is a deficient number, since it is larger than the sum of its proper divisors (74743241642).

77154313888 is a wasteful number, since it uses less digits than its factorization.

77154313888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2411072319 (or 2411072311 counting only the distinct ones).

The product of its digits is 4515840, while the sum is 55.

The spelling of 77154313888 in words is "seventy-seven billion, one hundred fifty-four million, three hundred thirteen thousand, eight hundred eighty-eight".