81477110441167 has 8 divisors (see below), whose sum is σ = 93122276637312. Its totient is φ = 69833338992600.

The previous prime is 81477110441159. The next prime is 81477110441173. The reversal of 81477110441167 is 76114401177418.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 81477110441167 - 2³ = 81477110441159 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81477110441197) 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, 348561709 + ... + 348795382.

It is an arithmetic number, because the mean of its divisors is an integer number (11640284579664).

Almost surely, 2^{81477110441167} is an apocalyptic number.

81477110441167 is a deficient number, since it is larger than the sum of its proper divisors (11645166196145).

81477110441167 is a wasteful number, since it uses less digits than its factorization.

81477110441167 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 697373789.

The product of its (nonzero) digits is 1053696, while the sum is 52.

The spelling of 81477110441167 in words is "eighty-one trillion, four hundred seventy-seven billion, one hundred ten million, four hundred forty-one thousand, one hundred sixty-seven".