126776871780 has 192 divisors, whose sum is σ = 395621791488. Its totient is φ = 30130513920.

The previous prime is 126776871773. The next prime is 126776871829. The reversal of 126776871780 is 87178677621.

126776871780 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3763894 + ... + 3797426.

It is an arithmetic number, because the mean of its divisors is an integer number (2060530164).

Almost surely, 2^126776871780 is an apocalyptic number.

126776871780 is a gapful number since it is divisible by the number (10) 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 126776871780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (197810895744).

126776871780 is an abundant number, since it is smaller than the sum of its proper divisors (268844919708).

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

126776871780 is a wasteful number, since it uses less digits than its factorization.

126776871780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33726 (or 33724 counting only the distinct ones).

The product of its (nonzero) digits is 11063808, while the sum is 60.

The spelling of 126776871780 in words is "one hundred twenty-six billion, seven hundred seventy-six million, eight hundred seventy-one thousand, seven hundred eighty".