126063551432449 has 4 divisors (see below), whose sum is σ = 128745754654464. Its totient is φ = 123381348210436.

The previous prime is 126063551432279. The next prime is 126063551432461. The reversal of 126063551432449 is 944234155360621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 126063551432449 - 2⁴¹ = 123864528176897 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 126063551432449.

It is not an unprimeable number, because it can be changed into a prime (126063551432149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1341101610937 + ... + 1341101611030.

It is an arithmetic number, because the mean of its divisors is an integer number (32186438663616).

Almost surely, 2^{126063551432449} is an apocalyptic number.

It is an amenable number.

126063551432449 is a deficient number, since it is larger than the sum of its proper divisors (2682203222015).

126063551432449 is an equidigital number, since it uses as much as digits as its factorization.

126063551432449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2682203222014.

The product of its (nonzero) digits is 18662400, while the sum is 55.

The spelling of 126063551432449 in words is "one hundred twenty-six trillion, sixty-three billion, five hundred fifty-one million, four hundred thirty-two thousand, four hundred forty-nine".