126512771393 has 8 divisors (see below), whose sum is σ = 134539658280. Its totient is φ = 118550880000.

The previous prime is 126512771383. The next prime is 126512771431. The reversal of 126512771393 is 393177215621.

It can be written as a sum of positive squares in 4 ways, for example, as 87501781249 + 39010990144 = 295807^2 + 197512^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 126512771393 - 2²⁸ = 126244335937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126512771383) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16244858 + ... + 16252643.

It is an arithmetic number, because the mean of its divisors is an integer number (16817457285).

Almost surely, 2^126512771393 is an apocalyptic number.

It is an amenable number.

126512771393 is a deficient number, since it is larger than the sum of its proper divisors (8026886887).

126512771393 is a wasteful number, since it uses less digits than its factorization.

126512771393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32497747.

The product of its digits is 476280, while the sum is 47.

The spelling of 126512771393 in words is "one hundred twenty-six billion, five hundred twelve million, seven hundred seventy-one thousand, three hundred ninety-three".