1373545165544 has 64 divisors (see below), whose sum is σ = 2665408099200. Its totient is φ = 663061075200.

The previous prime is 1373545165537. The next prime is 1373545165549. The reversal of 1373545165544 is 4455615453731.

It is not an unprimeable number, because it can be changed into a prime (1373545165549) 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, 91373309 + ... + 91388339.

It is an arithmetic number, because the mean of its divisors is an integer number (41647001550).

Almost surely, 2^{1373545165544} is an apocalyptic number.

It is an amenable number.

1373545165544 is a deficient number, since it is larger than the sum of its proper divisors (1291862933656).

1373545165544 is a wasteful number, since it uses less digits than its factorization.

1373545165544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17434 (or 17430 counting only the distinct ones).

The product of its digits is 15120000, while the sum is 53.

The spelling of 1373545165544 in words is "one trillion, three hundred seventy-three billion, five hundred forty-five million, one hundred sixty-five thousand, five hundred forty-four".