126256077378578 has 8 divisors (see below), whose sum is σ = 216438989791872. Its totient is φ = 54109747447956.

The previous prime is 126256077378469. The next prime is 126256077378601. The reversal of 126256077378578 is 875873770652621.

It is a happy number.

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4509145620650 + ... + 4509145620677.

It is an arithmetic number, because the mean of its divisors is an integer number (27054873723984).

Almost surely, 2^{126256077378578} is an apocalyptic number.

126256077378578 is a deficient number, since it is larger than the sum of its proper divisors (90182912413294).

126256077378578 is an equidigital number, since it uses as much as digits as its factorization.

126256077378578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9018291241336.

The product of its (nonzero) digits is 1659571200, while the sum is 74.

The spelling of 126256077378578 in words is "one hundred twenty-six trillion, two hundred fifty-six billion, seventy-seven million, three hundred seventy-eight thousand, five hundred seventy-eight".