2158533290549 has 2 divisors, whose sum is σ = 2158533290550. Its totient is φ = 2158533290548.

The previous prime is 2158533290519. The next prime is 2158533290579. The reversal of 2158533290549 is 9450923358512.

It is a balanced prime because it is at equal distance from previous prime (2158533290519) and next prime (2158533290579).

It can be written as a sum of positive squares in only one way, i.e., 2082990768049 + 75542522500 = 1443257^2 + 274850^2 .

It is a cyclic number.

It is not a de Polignac number, because 2158533290549 - 2²⁴ = 2158516513333 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2158533290494 and 2158533290503.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2158533290519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1079266645274 + 1079266645275.

It is an arithmetic number, because the mean of its divisors is an integer number (1079266645275).

Almost surely, 2^{2158533290549} is an apocalyptic number.

It is an amenable number.

2158533290549 is a deficient number, since it is larger than the sum of its proper divisors (1).

2158533290549 is an equidigital number, since it uses as much as digits as its factorization.

2158533290549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664000, while the sum is 56.

The spelling of 2158533290549 in words is "two trillion, one hundred fifty-eight billion, five hundred thirty-three million, two hundred ninety thousand, five hundred forty-nine".