77224159985 has 24 divisors (see below), whose sum is σ = 111276009216. Its totient is φ = 51245520480.

The previous prime is 77224159973. The next prime is 77224159993. The reversal of 77224159985 is 58995142277.

It is not a de Polignac number, because 77224159985 - 2¹² = 77224155889 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5076287 + ... + 5091476.

It is an arithmetic number, because the mean of its divisors is an integer number (4636500384).

Almost surely, 2^77224159985 is an apocalyptic number.

It is an amenable number.

77224159985 is a deficient number, since it is larger than the sum of its proper divisors (34051849231).

77224159985 is a wasteful number, since it uses less digits than its factorization.

77224159985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10167813 (or 10167806 counting only the distinct ones).

The product of its digits is 12700800, while the sum is 59.

The spelling of 77224159985 in words is "seventy-seven billion, two hundred twenty-four million, one hundred fifty-nine thousand, nine hundred eighty-five".