126601437532 has 12 divisors (see below), whose sum is σ = 221569972120. Its totient is φ = 63295731216.

The previous prime is 126601437493. The next prime is 126601437533. The reversal of 126601437532 is 235734106621.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126601437533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1189482 + ... + 1291537.

Almost surely, 2^126601437532 is an apocalyptic number.

It is an amenable number.

126601437532 is a deficient number, since it is larger than the sum of its proper divisors (94968534588).

126601437532 is a wasteful number, since it uses less digits than its factorization.

126601437532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2493780 (or 2493778 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 40.

The spelling of 126601437532 in words is "one hundred twenty-six billion, six hundred one million, four hundred thirty-seven thousand, five hundred thirty-two".