1373485553764 has 27 divisors (see below), whose sum is σ = 2536845394041. Its totient is φ = 650577324960.

The previous prime is 1373485553747. The next prime is 1373485553813. The reversal of 1373485553764 is 4673555843731.

The square root of 1373485553764 is 1171958.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1103251928164 + 270233625600 = 1050358^2 + 519840^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 44518984 + ... + 44549824.

Almost surely, 2^{1373485553764} is an apocalyptic number.

1373485553764 is the 1171958-th square number.

It is an amenable number.

1373485553764 is a deficient number, since it is larger than the sum of its proper divisors (1163359840277).

1373485553764 is an frugal number, since it uses more digits than its factorization.

1373485553764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61724 (or 30862 counting only the distinct ones).

The product of its digits is 127008000, while the sum is 61.

The spelling of 1373485553764 in words is "one trillion, three hundred seventy-three billion, four hundred eighty-five million, five hundred fifty-three thousand, seven hundred sixty-four".