126178676201 has 4 divisors (see below), whose sum is σ = 126179851332. Its totient is φ = 126177501072.

The previous prime is 126178676191. The next prime is 126178676203. The reversal of 126178676201 is 102676871621.

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 31514770576 + 94663905625 = 177524^2 + 307675^2 .

It is a cyclic number.

It is not a de Polignac number, because 126178676201 - 2¹⁰ = 126178675177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126178676203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 408266 + ... + 647331.

It is an arithmetic number, because the mean of its divisors is an integer number (31544962833).

Almost surely, 2^126178676201 is an apocalyptic number.

It is an amenable number.

126178676201 is a deficient number, since it is larger than the sum of its proper divisors (1175131).

126178676201 is a wasteful number, since it uses less digits than its factorization.

126178676201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1175130.

The product of its (nonzero) digits is 338688, while the sum is 47.

The spelling of 126178676201 in words is "one hundred twenty-six billion, one hundred seventy-eight million, six hundred seventy-six thousand, two hundred one".