126456553520545 has 4 divisors (see below), whose sum is σ = 151747864224660. Its totient is φ = 101165242816432.

The previous prime is 126456553520501. The next prime is 126456553520629. The reversal of 126456553520545 is 545025355654621.

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 43434861603169 + 83021691917376 = 6590513^2 + 9111624^2 .

It is a cyclic number.

It is not a de Polignac number, because 126456553520545 - 2²⁵ = 126456519966113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 126456553520545.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12645655352050 + ... + 12645655352059.

It is an arithmetic number, because the mean of its divisors is an integer number (37936966056165).

Almost surely, 2^{126456553520545} is an apocalyptic number.

It is an amenable number.

126456553520545 is a deficient number, since it is larger than the sum of its proper divisors (25291310704115).

126456553520545 is an equidigital number, since it uses as much as digits as its factorization.

126456553520545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25291310704114.

The product of its (nonzero) digits is 108000000, while the sum is 58.

The spelling of 126456553520545 in words is "one hundred twenty-six trillion, four hundred fifty-six billion, five hundred fifty-three million, five hundred twenty thousand, five hundred forty-five".