181073903873434 has 96 divisors (see below), whose sum is σ = 339837223674816. Its totient is φ = 71481687413760.

The previous prime is 181073903873431. The next prime is 181073903873483. The reversal of 181073903873434 is 434378309370181.

It is not an unprimeable number, because it can be changed into a prime (181073903873431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 186415729 + ... + 187384555.

It is an arithmetic number, because the mean of its divisors is an integer number (3539971079946).

Almost surely, 2^{181073903873434} is an apocalyptic number.

181073903873434 is a deficient number, since it is larger than the sum of its proper divisors (158763319801382).

181073903873434 is a wasteful number, since it uses less digits than its factorization.

181073903873434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 971840 (or 971827 counting only the distinct ones).

The product of its (nonzero) digits is 36578304, while the sum is 61.

The spelling of 181073903873434 in words is "one hundred eighty-one trillion, seventy-three billion, nine hundred three million, eight hundred seventy-three thousand, four hundred thirty-four".