1143604167721 has 4 divisors (see below), whose sum is σ = 1149993018000. Its totient is φ = 1137215317444.

The previous prime is 1143604167701. The next prime is 1143604167737. The reversal of 1143604167721 is 1277614063411.

It is a happy number.

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 1143604167721 - 2⁷ = 1143604167593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1143604167701) 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, 3194424871 + ... + 3194425228.

It is an arithmetic number, because the mean of its divisors is an integer number (287498254500).

Almost surely, 2^{1143604167721} is an apocalyptic number.

It is an amenable number.

1143604167721 is a deficient number, since it is larger than the sum of its proper divisors (6388850279).

1143604167721 is an equidigital number, since it uses as much as digits as its factorization.

1143604167721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6388850278.

The product of its (nonzero) digits is 169344, while the sum is 43.

The spelling of 1143604167721 in words is "one trillion, one hundred forty-three billion, six hundred four million, one hundred sixty-seven thousand, seven hundred twenty-one".