126630428009 has 4 divisors (see below), whose sum is σ = 132136098816. Its totient is φ = 121124757204.

The previous prime is 126630428003. The next prime is 126630428033. The reversal of 126630428009 is 900824036621.

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 a de Polignac number, because none of the positive numbers 2^k-126630428009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126630428003) 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, 2752835369 + ... + 2752835414.

It is an arithmetic number, because the mean of its divisors is an integer number (33034024704).

Almost surely, 2^126630428009 is an apocalyptic number.

It is an amenable number.

126630428009 is a deficient number, since it is larger than the sum of its proper divisors (5505670807).

126630428009 is an equidigital number, since it uses as much as digits as its factorization.

126630428009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5505670806.

The product of its (nonzero) digits is 124416, while the sum is 41.

The spelling of 126630428009 in words is "one hundred twenty-six billion, six hundred thirty million, four hundred twenty-eight thousand, nine".