126256077378579 has 8 divisors (see below), whose sum is σ = 168374322135040. Its totient is φ = 84154275437256.

The previous prime is 126256077378469. The next prime is 126256077378601. The reversal of 126256077378579 is 975873770652621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 126256077378579 - 2¹⁶ = 126256077313043 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 126256077378579.

It is not an unprimeable number, because it can be changed into a prime (126256077278579) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 4110685867 + ... + 4110716580.

It is an arithmetic number, because the mean of its divisors is an integer number (21046790266880).

Almost surely, 2^{126256077378579} is an apocalyptic number.

126256077378579 is a deficient number, since it is larger than the sum of its proper divisors (42118244756461).

126256077378579 is an equidigital number, since it uses as much as digits as its factorization.

126256077378579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8221407569.

The product of its (nonzero) digits is 1867017600, while the sum is 75.

The spelling of 126256077378579 in words is "one hundred twenty-six trillion, two hundred fifty-six billion, seventy-seven million, three hundred seventy-eight thousand, five hundred seventy-nine".