81003350055 has 16 divisors (see below), whose sum is σ = 135240376320. Its totient is φ = 41323447968.

The previous prime is 81003350053. The next prime is 81003350069. The reversal of 81003350055 is 55005330018.

It is not a de Polignac number, because 81003350055 - 2¹ = 81003350053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81003350053) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117395815 + ... + 117396504.

It is an arithmetic number, because the mean of its divisors is an integer number (8452523520).

Almost surely, 2^81003350055 is an apocalyptic number.

81003350055 is a deficient number, since it is larger than the sum of its proper divisors (54237026265).

81003350055 is a wasteful number, since it uses less digits than its factorization.

81003350055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234792350.

The product of its (nonzero) digits is 9000, while the sum is 30.

The spelling of 81003350055 in words is "eighty-one billion, three million, three hundred fifty thousand, fifty-five".