2156006157769 has 8 divisors (see below), whose sum is σ = 2158713145440. Its totient is φ = 2153299413216.

The previous prime is 2156006157737. The next prime is 2156006157797. The reversal of 2156006157769 is 9677516006512.

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

It is a cyclic number.

It is not a de Polignac number, because 2156006157769 - 2⁵ = 2156006157737 is a prime.

It is a super-2 number, since 2×2156006157769² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2156006155769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23244517 + ... + 23337085.

It is an arithmetic number, because the mean of its divisors is an integer number (269839143180).

Almost surely, 2^{2156006157769} is an apocalyptic number.

It is an amenable number.

2156006157769 is a deficient number, since it is larger than the sum of its proper divisors (2706987671).

2156006157769 is an equidigital number, since it uses as much as digits as its factorization.

2156006157769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121559.

The product of its (nonzero) digits is 4762800, while the sum is 55.

The spelling of 2156006157769 in words is "two trillion, one hundred fifty-six billion, six million, one hundred fifty-seven thousand, seven hundred sixty-nine".