2529127666249 has 4 divisors (see below), whose sum is σ = 2543100747460. Its totient is φ = 2515154585040.

The previous prime is 2529127666231. The next prime is 2529127666259. The reversal of 2529127666249 is 9426667219252.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 110968934400 + 2418158731849 = 333120^2 + 1555043^2 .

It is a cyclic number.

It is not a de Polignac number, because 2529127666249 - 2²¹ = 2529125569097 is a prime.

It is a super-2 number, since 2×2529127666249² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2529127666259) 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 in 3 ways as a sum of consecutive naturals, for example, 6986540334 + ... + 6986540695.

It is an arithmetic number, because the mean of its divisors is an integer number (635775186865).

Almost surely, 2^{2529127666249} is an apocalyptic number.

It is an amenable number.

2529127666249 is a deficient number, since it is larger than the sum of its proper divisors (13973081211).

2529127666249 is a wasteful number, since it uses less digits than its factorization.

2529127666249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13973081210.

The product of its digits is 39191040, while the sum is 61.

The spelling of 2529127666249 in words is "two trillion, five hundred twenty-nine billion, one hundred twenty-seven million, six hundred sixty-six thousand, two hundred forty-nine".