126659543451 has 8 divisors (see below), whose sum is σ = 193005018624. Its totient is φ = 72376881960.

The previous prime is 126659543407. The next prime is 126659543501. The reversal of 126659543451 is 154345956621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 126659543451 - 2¹⁴ = 126659527067 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 126659543394 and 126659543403.

It is not an unprimeable number, because it can be changed into a prime (126659543251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3015703395 + ... + 3015703436.

It is an arithmetic number, because the mean of its divisors is an integer number (24125627328).

Almost surely, 2^126659543451 is an apocalyptic number.

126659543451 is a deficient number, since it is larger than the sum of its proper divisors (66345475173).

126659543451 is an equidigital number, since it uses as much as digits as its factorization.

126659543451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6031406841.

The product of its digits is 3888000, while the sum is 51.

The spelling of 126659543451 in words is "one hundred twenty-six billion, six hundred fifty-nine million, five hundred forty-three thousand, four hundred fifty-one".