2157424405189 has 2 divisors, whose sum is σ = 2157424405190. Its totient is φ = 2157424405188.

The previous prime is 2157424405127. The next prime is 2157424405207. The reversal of 2157424405189 is 9815044247512.

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., 1909785802500 + 247638602689 = 1381950^2 + 497633^2 .

It is a cyclic number.

It is not a de Polignac number, because 2157424405189 - 2⁹ = 2157424404677 is a prime.

It is a super-2 number, since 2×2157424405189² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2157424105189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1078712202594 + 1078712202595.

It is an arithmetic number, because the mean of its divisors is an integer number (1078712202595).

Almost surely, 2^{2157424405189} is an apocalyptic number.

It is an amenable number.

2157424405189 is a deficient number, since it is larger than the sum of its proper divisors (1).

2157424405189 is an equidigital number, since it uses as much as digits as its factorization.

2157424405189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3225600, while the sum is 52.

The spelling of 2157424405189 in words is "two trillion, one hundred fifty-seven billion, four hundred twenty-four million, four hundred five thousand, one hundred eighty-nine".