81414543630854 has 16 divisors (see below), whose sum is σ = 139593022949376. Its totient is φ = 34885638803400.

The previous prime is 81414543630851. The next prime is 81414543630863. The reversal of 81414543630854 is 45803634541418.

It is a self number, because there is not a number n which added to its sum of digits gives 81414543630854.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81414543630851) 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, 525625382 + ... + 525780249.

It is an arithmetic number, because the mean of its divisors is an integer number (8724563934336).

Almost surely, 2^{81414543630854} is an apocalyptic number.

81414543630854 is a deficient number, since it is larger than the sum of its proper divisors (58178479318522).

81414543630854 is a wasteful number, since it uses less digits than its factorization.

81414543630854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1051411171.

The product of its (nonzero) digits is 22118400, while the sum is 56.

The spelling of 81414543630854 in words is "eighty-one trillion, four hundred fourteen billion, five hundred forty-three million, six hundred thirty thousand, eight hundred fifty-four".