1006156556643 has 8 divisors (see below), whose sum is σ = 1533190943488. Its totient is φ = 574946603784.

The previous prime is 1006156556623. The next prime is 1006156556659. The reversal of 1006156556643 is 3466556516001.

1006156556643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1006156556643 - 2¹⁰ = 1006156555619 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1006156556592 and 1006156556601.

It is not an unprimeable number, because it can be changed into a prime (1006156556623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23956108471 + ... + 23956108512.

It is an arithmetic number, because the mean of its divisors is an integer number (191648867936).

Almost surely, 2^{1006156556643} is an apocalyptic number.

1006156556643 is a deficient number, since it is larger than the sum of its proper divisors (527034386845).

1006156556643 is an equidigital number, since it uses as much as digits as its factorization.

1006156556643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47912216993.

The product of its (nonzero) digits is 1944000, while the sum is 48.

The spelling of 1006156556643 in words is "one trillion, six billion, one hundred fifty-six million, five hundred fifty-six thousand, six hundred forty-three".