1143766158021 has 12 divisors (see below), whose sum is σ = 1652253295680. Its totient is φ = 762443099880.

The previous prime is 1143766157999. The next prime is 1143766158043. The reversal of 1143766158021 is 1208516673411.

1143766158021 is a `hidden beast` number, since 1 + 1 + 4 + 3 + 7 + 6 + 61 + 580 + 2 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (1143766157999) and next prime (1143766158043).

It is not a de Polignac number, because 1143766158021 - 2¹⁰ = 1143766156997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143766158071) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5532195 + ... + 5735216.

It is an arithmetic number, because the mean of its divisors is an integer number (137687774640).

Almost surely, 2^{1143766158021} is an apocalyptic number.

It is an amenable number.

1143766158021 is a deficient number, since it is larger than the sum of its proper divisors (508487137659).

1143766158021 is a wasteful number, since it uses less digits than its factorization.

1143766158021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11278696 (or 11278693 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The spelling of 1143766158021 in words is "one trillion, one hundred forty-three billion, seven hundred sixty-six million, one hundred fifty-eight thousand, twenty-one".