1383043986553 has 4 divisors (see below), whose sum is σ = 1412470454400. Its totient is φ = 1353617518708.

The previous prime is 1383043986551. The next prime is 1383043986641. The reversal of 1383043986553 is 3556893403831.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1383043986553 - 2¹ = 1383043986551 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1383043986551) 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, 14713233853 + ... + 14713233946.

It is an arithmetic number, because the mean of its divisors is an integer number (353117613600).

Almost surely, 2^{1383043986553} is an apocalyptic number.

It is an amenable number.

1383043986553 is a deficient number, since it is larger than the sum of its proper divisors (29426467847).

1383043986553 is an equidigital number, since it uses as much as digits as its factorization.

1383043986553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29426467846.

The product of its (nonzero) digits is 27993600, while the sum is 58.

The spelling of 1383043986553 in words is "one trillion, three hundred eighty-three billion, forty-three million, nine hundred eighty-six thousand, five hundred fifty-three".