126510534161 has 16 divisors (see below), whose sum is σ = 144559641600. Its totient is φ = 109590816720.

The previous prime is 126510534127. The next prime is 126510534179. The reversal of 126510534161 is 161435015621.

It is not a de Polignac number, because 126510534161 - 2³⁴ = 109330664977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (126510534961) 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 15 ways as a sum of consecutive naturals, for example, 884111 + ... + 1017188.

It is an arithmetic number, because the mean of its divisors is an integer number (9034977600).

Almost surely, 2^126510534161 is an apocalyptic number.

126510534161 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

126510534161 is a deficient number, since it is larger than the sum of its proper divisors (18049107439).

126510534161 is a wasteful number, since it uses less digits than its factorization.

126510534161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1901596.

The product of its (nonzero) digits is 21600, while the sum is 35.

Adding to 126510534161 its reverse (161435015621), we get a palindrome (287945549782).

The spelling of 126510534161 in words is "one hundred twenty-six billion, five hundred ten million, five hundred thirty-four thousand, one hundred sixty-one".