126726607506 has 64 divisors (see below), whose sum is σ = 266123128320. Its totient is φ = 40188426240.

The previous prime is 126726607463. The next prime is 126726607519. The reversal of 126726607506 is 605706627621.

It is a super-3 number, since 3×126726607506³ (a number of 34 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3182890 + ... + 3222458.

It is an arithmetic number, because the mean of its divisors is an integer number (4158173880).

Almost surely, 2^126726607506 is an apocalyptic number.

126726607506 is an abundant number, since it is smaller than the sum of its proper divisors (139396520814).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

126726607506 is a wasteful number, since it uses less digits than its factorization.

126726607506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39939.

The product of its (nonzero) digits is 1270080, while the sum is 48.

The spelling of 126726607506 in words is "one hundred twenty-six billion, seven hundred twenty-six million, six hundred seven thousand, five hundred six".