77102086845 has 96 divisors (see below), whose sum is σ = 145297490688. Its totient is φ = 34200133632.

The previous prime is 77102086801. The next prime is 77102086847. The reversal of 77102086845 is 54868020177.

It is not a de Polignac number, because 77102086845 - 2⁹ = 77102086333 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 77102086794 and 77102086803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77102086847) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 96739987 + ... + 96740783.

It is an arithmetic number, because the mean of its divisors is an integer number (1513515528).

Almost surely, 2^77102086845 is an apocalyptic number.

It is an amenable number.

77102086845 is a deficient number, since it is larger than the sum of its proper divisors (68195403843).

77102086845 is a wasteful number, since it uses less digits than its factorization.

77102086845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1559 (or 1522 counting only the distinct ones).

The product of its (nonzero) digits is 752640, while the sum is 48.

The spelling of 77102086845 in words is "seventy-seven billion, one hundred two million, eighty-six thousand, eight hundred forty-five".