126538280877 has 4 divisors (see below), whose sum is σ = 168717707840. Its totient is φ = 84358853916.

The previous prime is 126538280863. The next prime is 126538280887. The reversal of 126538280877 is 778082835621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 126538280877 - 2⁷ = 126538280749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126538280807) 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, 21089713477 + ... + 21089713482.

It is an arithmetic number, because the mean of its divisors is an integer number (42179426960).

Almost surely, 2^126538280877 is an apocalyptic number.

It is an amenable number.

126538280877 is a deficient number, since it is larger than the sum of its proper divisors (42179426963).

126538280877 is an equidigital number, since it uses as much as digits as its factorization.

126538280877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42179426962.

The product of its (nonzero) digits is 9031680, while the sum is 57.

The spelling of 126538280877 in words is "one hundred twenty-six billion, five hundred thirty-eight million, two hundred eighty thousand, eight hundred seventy-seven".