126162406577 has 4 divisors (see below), whose sum is σ = 130512834420. Its totient is φ = 121811978736.

The previous prime is 126162406571. The next prime is 126162406603. The reversal of 126162406577 is 775604261621.

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 82125803776 + 44036602801 = 286576^2 + 209849^2 .

It is a cyclic number.

It is not a de Polignac number, because 126162406577 - 2²² = 126158212273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126162406571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2175213878 + ... + 2175213935.

It is an arithmetic number, because the mean of its divisors is an integer number (32628208605).

Almost surely, 2^126162406577 is an apocalyptic number.

It is an amenable number.

126162406577 is a deficient number, since it is larger than the sum of its proper divisors (4350427843).

126162406577 is an equidigital number, since it uses as much as digits as its factorization.

126162406577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4350427842.

The product of its (nonzero) digits is 846720, while the sum is 47.

The spelling of 126162406577 in words is "one hundred twenty-six billion, one hundred sixty-two million, four hundred six thousand, five hundred seventy-seven".