1383687661573 has 16 divisors (see below), whose sum is σ = 1630189618560. Its totient is φ = 1149944518656.

The previous prime is 1383687661529. The next prime is 1383687661613. The reversal of 1383687661573 is 3751667863831.

It is a cyclic number.

It is not a de Polignac number, because 1383687661573 - 2³⁷ = 1246248708101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1383687661513) 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, 22917340 + ... + 22977637.

It is an arithmetic number, because the mean of its divisors is an integer number (101886851160).

Almost surely, 2^{1383687661573} is an apocalyptic number.

It is an amenable number.

1383687661573 is a deficient number, since it is larger than the sum of its proper divisors (246501956987).

1383687661573 is an equidigital number, since it uses as much as digits as its factorization.

1383687661573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45895116.

The product of its digits is 91445760, while the sum is 64.

The spelling of 1383687661573 in words is "one trillion, three hundred eighty-three billion, six hundred eighty-seven million, six hundred sixty-one thousand, five hundred seventy-three".