2158823725511 has 2 divisors, whose sum is σ = 2158823725512. Its totient is φ = 2158823725510.

The previous prime is 2158823725489. The next prime is 2158823725537. The reversal of 2158823725511 is 1155273288512.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2158823725511 - 2²² = 2158819531207 is a prime.

It is a super-2 number, since 2×2158823725511² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2158823725511.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2158823725561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1079411862755 + 1079411862756.

It is an arithmetic number, because the mean of its divisors is an integer number (1079411862756).

Almost surely, 2^{2158823725511} is an apocalyptic number.

2158823725511 is a deficient number, since it is larger than the sum of its proper divisors (1).

2158823725511 is an equidigital number, since it uses as much as digits as its factorization.

2158823725511 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1344000, while the sum is 50.

The spelling of 2158823725511 in words is "two trillion, one hundred fifty-eight billion, eight hundred twenty-three million, seven hundred twenty-five thousand, five hundred eleven".