2156533815277 has 2 divisors, whose sum is σ = 2156533815278. Its totient is φ = 2156533815276.

The previous prime is 2156533815229. The next prime is 2156533815313. The reversal of 2156533815277 is 7725183356512.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1946636057961 + 209897757316 = 1395219^2 + 458146^2 .

It is a cyclic number.

It is not a de Polignac number, because 2156533815277 - 2¹¹ = 2156533813229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2156533855277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1078266907638 + 1078266907639.

It is an arithmetic number, because the mean of its divisors is an integer number (1078266907639).

Almost surely, 2^{2156533815277} is an apocalyptic number.

It is an amenable number.

2156533815277 is a deficient number, since it is larger than the sum of its proper divisors (1).

2156533815277 is an equidigital number, since it uses as much as digits as its factorization.

2156533815277 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10584000, while the sum is 55.

The spelling of 2156533815277 in words is "two trillion, one hundred fifty-six billion, five hundred thirty-three million, eight hundred fifteen thousand, two hundred seventy-seven".