1808081568045 has 12 divisors (see below), whose sum is σ = 3134008051356. Its totient is φ = 964310169600.

The previous prime is 1808081568031. The next prime is 1808081568053. The reversal of 1808081568045 is 5408651808081.

It can be written as a sum of positive squares in 2 ways, for example, as 439736091876 + 1368345476169 = 663126^2 + 1169763^2 .

It is not a de Polignac number, because 1808081568045 - 2⁹ = 1808081567533 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1808081567982 and 1808081568000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20089795156 + ... + 20089795245.

It is an arithmetic number, because the mean of its divisors is an integer number (261167337613).

Almost surely, 2^{1808081568045} is an apocalyptic number.

1808081568045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1808081568045 is a deficient number, since it is larger than the sum of its proper divisors (1325926483311).

1808081568045 is a wasteful number, since it uses less digits than its factorization.

1808081568045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40179590412 (or 40179590409 counting only the distinct ones).

The product of its (nonzero) digits is 2457600, while the sum is 54.

The spelling of 1808081568045 in words is "one trillion, eight hundred eight billion, eighty-one million, five hundred sixty-eight thousand, forty-five".