1373225532544 has 64 divisors (see below), whose sum is σ = 2825740108800. Its totient is φ = 664047912960.

The previous prime is 1373225532527. The next prime is 1373225532599. The reversal of 1373225532544 is 4452355223731.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×1373225532544² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1373225532494 and 1373225532503.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6276969 + ... + 6492055.

It is an arithmetic number, because the mean of its divisors is an integer number (44152189200).

Almost surely, 2^{1373225532544} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1373225532544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1412870054400).

1373225532544 is an abundant number, since it is smaller than the sum of its proper divisors (1452514576256).

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

1373225532544 is a wasteful number, since it uses less digits than its factorization.

1373225532544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216741 (or 216729 counting only the distinct ones).

The product of its digits is 3024000, while the sum is 46.

The spelling of 1373225532544 in words is "one trillion, three hundred seventy-three billion, two hundred twenty-five million, five hundred thirty-two thousand, five hundred forty-four".