81054365098 has 8 divisors (see below), whose sum is σ = 138950340192. Its totient is φ = 34737585036.

The previous prime is 81054365089. The next prime is 81054365101. The reversal of 81054365098 is 89056345018.

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

It is an alternating number because its digits alternate between even and odd.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2894798740 + ... + 2894798767.

It is an arithmetic number, because the mean of its divisors is an integer number (17368792524).

Almost surely, 2^81054365098 is an apocalyptic number.

81054365098 is a deficient number, since it is larger than the sum of its proper divisors (57895975094).

81054365098 is a wasteful number, since it uses less digits than its factorization.

81054365098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5789597516.

The product of its (nonzero) digits is 1036800, while the sum is 49.

The spelling of 81054365098 in words is "eighty-one billion, fifty-four million, three hundred sixty-five thousand, ninety-eight".