1845377243440 has 20 divisors (see below), whose sum is σ = 4290502091184. Its totient is φ = 738150897344.

The previous prime is 1845377243431. The next prime is 1845377243447. The reversal of 1845377243440 is 443427735481.

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (1845377243447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11533607692 + ... + 11533607851.

Almost surely, 2^{1845377243440} is an apocalyptic number.

1845377243440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1845377243440 is an abundant number, since it is smaller than the sum of its proper divisors (2445124847744).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1845377243440 is a wasteful number, since it uses less digits than its factorization.

1845377243440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23067215556 (or 23067215550 counting only the distinct ones).

The product of its (nonzero) digits is 9031680, while the sum is 52.

The spelling of 1845377243440 in words is "one trillion, eight hundred forty-five billion, three hundred seventy-seven million, two hundred forty-three thousand, four hundred forty".