126784314571 has 4 divisors (see below), whose sum is σ = 127441228312. Its totient is φ = 126127400832.

The previous prime is 126784314557. The next prime is 126784314583. The reversal of 126784314571 is 175413487621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 175413487621 = 149 ⋅1177271729.

It is a cyclic number.

It is not a de Polignac number, because 126784314571 - 2²⁷ = 126650096843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126784314551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 328456581 + ... + 328456966.

It is an arithmetic number, because the mean of its divisors is an integer number (31860307078).

Almost surely, 2^126784314571 is an apocalyptic number.

126784314571 is a deficient number, since it is larger than the sum of its proper divisors (656913741).

126784314571 is an equidigital number, since it uses as much as digits as its factorization.

126784314571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656913740.

The product of its digits is 1128960, while the sum is 49.

The spelling of 126784314571 in words is "one hundred twenty-six billion, seven hundred eighty-four million, three hundred fourteen thousand, five hundred seventy-one".