126728087868 has 48 divisors (see below), whose sum is σ = 347881030560. Its totient is φ = 39757830912.

The previous prime is 126728087797. The next prime is 126728087873. The reversal of 126728087868 is 868780827621.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34510171 + ... + 34513842.

It is an arithmetic number, because the mean of its divisors is an integer number (7247521470).

Almost surely, 2^126728087868 is an apocalyptic number.

126728087868 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

126728087868 is an abundant number, since it is smaller than the sum of its proper divisors (221152942692).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

126728087868 is a wasteful number, since it uses less digits than its factorization.

126728087868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69024043 (or 69024035 counting only the distinct ones).

The product of its (nonzero) digits is 28901376, while the sum is 63.

The spelling of 126728087868 in words is "one hundred twenty-six billion, seven hundred twenty-eight million, eighty-seven thousand, eight hundred sixty-eight".