2156023355041 has 4 divisors (see below), whose sum is σ = 2156174977684. Its totient is φ = 2155871732400.

The previous prime is 2156023355039. The next prime is 2156023355069. The reversal of 2156023355041 is 1405533206512.

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

It can be written as a sum of positive squares in 2 ways, for example, as 709139146816 + 1446884208225 = 842104^2 + 1202865^2 .

It is a cyclic number.

It is not a de Polignac number, because 2156023355041 - 2¹ = 2156023355039 is a prime.

It is a super-4 number, since 4×2156023355041⁴ (a number of 50 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2156023355021) 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, 75789990 + ... + 75818431.

It is an arithmetic number, because the mean of its divisors is an integer number (539043744421).

Almost surely, 2^{2156023355041} is an apocalyptic number.

It is an amenable number.

2156023355041 is a deficient number, since it is larger than the sum of its proper divisors (151622643).

2156023355041 is a wasteful number, since it uses less digits than its factorization.

2156023355041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151622642.

The product of its (nonzero) digits is 108000, while the sum is 37.

The spelling of 2156023355041 in words is "two trillion, one hundred fifty-six billion, twenty-three million, three hundred fifty-five thousand, forty-one".