126173621073535 has 32 divisors (see below), whose sum is σ = 173273558925312. Its totient is φ = 86401336176000.

The previous prime is 126173621073377. The next prime is 126173621073557. The reversal of 126173621073535 is 535370126371621.

It is not a de Polignac number, because 126173621073535 - 2⁹ = 126173621073023 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 1609995922 + ... + 1610074288.

It is an arithmetic number, because the mean of its divisors is an integer number (5414798716416).

Almost surely, 2^{126173621073535} is an apocalyptic number.

126173621073535 is a deficient number, since it is larger than the sum of its proper divisors (47099937851777).

126173621073535 is an equidigital number, since it uses as much as digits as its factorization.

126173621073535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140383.

The product of its (nonzero) digits is 4762800, while the sum is 52.

The spelling of 126173621073535 in words is "one hundred twenty-six trillion, one hundred seventy-three billion, six hundred twenty-one million, seventy-three thousand, five hundred thirty-five".