81150705118 has 32 divisors (see below), whose sum is σ = 141222221568. Its totient is φ = 34252416000.

The previous prime is 81150705091. The next prime is 81150705157.

81150705118 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×81150705118² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8447518 + ... + 8457118.

It is an arithmetic number, because the mean of its divisors is an integer number (4413194424).

Almost surely, 2^81150705118 is an apocalyptic number.

81150705118 is a deficient number, since it is larger than the sum of its proper divisors (60071516450).

81150705118 is a wasteful number, since it uses less digits than its factorization.

81150705118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18688.

The product of its (nonzero) digits is 11200, while the sum is 37.

The spelling of 81150705118 in words is "eighty-one billion, one hundred fifty million, seven hundred five thousand, one hundred eighteen".