1143072169391 has 4 divisors (see below), whose sum is σ = 1143076425000. Its totient is φ = 1143067913784.

The previous prime is 1143072169367. The next prime is 1143072169411. The reversal of 1143072169391 is 1939612703411.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1143072169391 - 2¹⁴ = 1143072153007 is a prime.

It is a super-2 number, since 2×1143072169391² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143072169091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1695641 + ... + 2271858.

It is an arithmetic number, because the mean of its divisors is an integer number (285769106250).

Almost surely, 2^{1143072169391} is an apocalyptic number.

1143072169391 is a deficient number, since it is larger than the sum of its proper divisors (4255609).

1143072169391 is an equidigital number, since it uses as much as digits as its factorization.

1143072169391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4255608.

The product of its (nonzero) digits is 244944, while the sum is 47.

The spelling of 1143072169391 in words is "one trillion, one hundred forty-three billion, seventy-two million, one hundred sixty-nine thousand, three hundred ninety-one".