126603542506 has 32 divisors (see below), whose sum is σ = 220188395520. Its totient is φ = 53470897200.

The previous prime is 126603542497. The next prime is 126603542537. The reversal of 126603542506 is 605245306621.

It is a happy number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 2329915 + ... + 2383633.

It is an arithmetic number, because the mean of its divisors is an integer number (6880887360).

Almost surely, 2^126603542506 is an apocalyptic number.

126603542506 is a deficient number, since it is larger than the sum of its proper divisors (93584853014).

126603542506 is a wasteful number, since it uses less digits than its factorization.

126603542506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56170.

The product of its (nonzero) digits is 259200, while the sum is 40.

The spelling of 126603542506 in words is "one hundred twenty-six billion, six hundred three million, five hundred forty-two thousand, five hundred six".