81024118777 has 16 divisors (see below), whose sum is σ = 92932145152. Its totient is φ = 69199537680.

The previous prime is 81024118717. The next prime is 81024118807. The reversal of 81024118777 is 77781142018.

It is not a de Polignac number, because 81024118777 - 2⁷ = 81024118649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (81024118717) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9887752 + ... + 9895942.

It is an arithmetic number, because the mean of its divisors is an integer number (5808259072).

Almost surely, 2^81024118777 is an apocalyptic number.

It is an amenable number.

81024118777 is a deficient number, since it is larger than the sum of its proper divisors (11908026375).

81024118777 is a wasteful number, since it uses less digits than its factorization.

81024118777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13108.

The product of its (nonzero) digits is 175616, while the sum is 46.

The spelling of 81024118777 in words is "eighty-one billion, twenty-four million, one hundred eighteen thousand, seven hundred seventy-seven".