126765420736 has 56 divisors (see below), whose sum is σ = 263130121440. Its totient is φ = 60478420992.

The previous prime is 126765420709. The next prime is 126765420739. The reversal of 126765420736 is 637024567621.

It is a self number, because there is not a number n which added to its sum of digits gives 126765420736.

It is not an unprimeable number, because it can be changed into a prime (126765420739) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 496770 + ... + 707326.

Almost surely, 2^126765420736 is an apocalyptic number.

126765420736 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 126765420736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (131565060720).

126765420736 is an abundant number, since it is smaller than the sum of its proper divisors (136364700704).

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

126765420736 is a wasteful number, since it uses less digits than its factorization.

126765420736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211001 (or 210991 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 49.

The spelling of 126765420736 in words is "one hundred twenty-six billion, seven hundred sixty-five million, four hundred twenty thousand, seven hundred thirty-six".