77488747086 has 16 divisors (see below), whose sum is σ = 156425883264. Its totient is φ = 25588184184.

The previous prime is 77488747009. The next prime is 77488747087. The reversal of 77488747086 is 68074788477.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77488747087) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60348850 + ... + 60350133.

It is an arithmetic number, because the mean of its divisors is an integer number (9776617704).

Almost surely, 2^77488747086 is an apocalyptic number.

77488747086 is an abundant number, since it is smaller than the sum of its proper divisors (78937136178).

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

77488747086 is a wasteful number, since it uses less digits than its factorization.

77488747086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120699095.

The product of its (nonzero) digits is 118013952, while the sum is 66.

The spelling of 77488747086 in words is "seventy-seven billion, four hundred eighty-eight million, seven hundred forty-seven thousand, eighty-six".