126379077823 has 4 divisors (see below), whose sum is σ = 127374188800. Its totient is φ = 125383966848.

The previous prime is 126379077767. The next prime is 126379077863. The reversal of 126379077823 is 328770973621.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 126379077823 - 2¹⁷ = 126378946751 is a prime.

It is a super-2 number, since 2×126379077823² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126379077863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 497555298 + ... + 497555551.

It is an arithmetic number, because the mean of its divisors is an integer number (31843547200).

Almost surely, 2^126379077823 is an apocalyptic number.

126379077823 is a deficient number, since it is larger than the sum of its proper divisors (995110977).

126379077823 is an equidigital number, since it uses as much as digits as its factorization.

126379077823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 995110976.

The product of its (nonzero) digits is 5334336, while the sum is 55.

The spelling of 126379077823 in words is "one hundred twenty-six billion, three hundred seventy-nine million, seventy-seven thousand, eight hundred twenty-three".