81414740134 has 32 divisors (see below), whose sum is σ = 154366422336. Its totient is φ = 31337539200.

The previous prime is 81414740123. The next prime is 81414740159. The reversal of 81414740134 is 43104741418.

It is a super-2 number, since 2×81414740134² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a junction number, because it is equal to n+sod(n) for n = 81414740093 and 81414740102.

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, 6038317 + ... + 6051784.

It is an arithmetic number, because the mean of its divisors is an integer number (4823950698).

Almost surely, 2^81414740134 is an apocalyptic number.

81414740134 is a deficient number, since it is larger than the sum of its proper divisors (72951682202).

81414740134 is a wasteful number, since it uses less digits than its factorization.

81414740134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12090160.

The product of its (nonzero) digits is 43008, while the sum is 37.

The spelling of 81414740134 in words is "eighty-one billion, four hundred fourteen million, seven hundred forty thousand, one hundred thirty-four".