126658801899 has 16 divisors (see below), whose sum is σ = 214448765440. Its totient is φ = 72376458120.

The previous prime is 126658801859. The next prime is 126658801901. The reversal of 126658801899 is 998108856621.

It is a de Polignac number, because none of the positive numbers 2^k-126658801899 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (126658801859) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 335076007 + ... + 335076384.

It is an arithmetic number, because the mean of its divisors is an integer number (13403047840).

Almost surely, 2^126658801899 is an apocalyptic number.

126658801899 is a deficient number, since it is larger than the sum of its proper divisors (87789963541).

126658801899 is an equidigital number, since it uses as much as digits as its factorization.

126658801899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670152407 (or 670152401 counting only the distinct ones).

The product of its (nonzero) digits is 14929920, while the sum is 63.

The spelling of 126658801899 in words is "one hundred twenty-six billion, six hundred fifty-eight million, eight hundred one thousand, eight hundred ninety-nine".