126288604973 has 4 divisors (see below), whose sum is σ = 133717346460. Its totient is φ = 118859863488.

The previous prime is 126288604969. The next prime is 126288604991. The reversal of 126288604973 is 379406882621.

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 72734314249 + 53554290724 = 269693^2 + 231418^2 .

It is a cyclic number.

It is not a de Polignac number, because 126288604973 - 2² = 126288604969 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126288604903) 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, 3714370718 + ... + 3714370751.

It is an arithmetic number, because the mean of its divisors is an integer number (33429336615).

Almost surely, 2^126288604973 is an apocalyptic number.

It is an amenable number.

126288604973 is a deficient number, since it is larger than the sum of its proper divisors (7428741487).

126288604973 is an equidigital number, since it uses as much as digits as its factorization.

126288604973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7428741486.

The product of its (nonzero) digits is 6967296, while the sum is 56.

The spelling of 126288604973 in words is "one hundred twenty-six billion, two hundred eighty-eight million, six hundred four thousand, nine hundred seventy-three".