81845552010148 has 12 divisors (see below), whose sum is σ = 143229779642880. Its totient is φ = 40922757826472.

The previous prime is 81845552010097. The next prime is 81845552010169. The reversal of 81845552010148 is 84101025554818.

It is a junction number, because it is equal to n+sod(n) for n = 81845552010095 and 81845552010104.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13932093 + ... + 18915451.

It is an arithmetic number, because the mean of its divisors is an integer number (11935814970240).

Almost surely, 2^{81845552010148} is an apocalyptic number.

It is an amenable number.

81845552010148 is a deficient number, since it is larger than the sum of its proper divisors (61384227632732).

81845552010148 is a wasteful number, since it uses less digits than its factorization.

81845552010148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9089306 (or 9089304 counting only the distinct ones).

The product of its (nonzero) digits is 2048000, while the sum is 52.

The spelling of 81845552010148 in words is "eighty-one trillion, eight hundred forty-five billion, five hundred fifty-two million, ten thousand, one hundred forty-eight".