2157424246529 has 2 divisors, whose sum is σ = 2157424246530. Its totient is φ = 2157424246528.

The previous prime is 2157424246517. The next prime is 2157424246553. The reversal of 2157424246529 is 9256424247512.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2000074777600 + 157349468929 = 1414240^2 + 396673^2 .

It is a cyclic number.

It is not a de Polignac number, because 2157424246529 - 2¹⁶ = 2157424180993 is a prime.

It is a super-2 number, since 2×2157424246529² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2157424246129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1078712123264 + 1078712123265.

It is an arithmetic number, because the mean of its divisors is an integer number (1078712123265).

Almost surely, 2^{2157424246529} is an apocalyptic number.

It is an amenable number.

2157424246529 is a deficient number, since it is larger than the sum of its proper divisors (1).

2157424246529 is an equidigital number, since it uses as much as digits as its factorization.

2157424246529 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9676800, while the sum is 53.

The spelling of 2157424246529 in words is "two trillion, one hundred fifty-seven billion, four hundred twenty-four million, two hundred forty-six thousand, five hundred twenty-nine".