126512771431 has 2 divisors, whose sum is σ = 126512771432. Its totient is φ = 126512771430.

The previous prime is 126512771383. The next prime is 126512771443. The reversal of 126512771431 is 134177215621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 126512771431 - 2⁹ = 126512770919 is a prime.

It is a super-2 number, since 2×126512771431² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126512771531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63256385715 + 63256385716.

It is an arithmetic number, because the mean of its divisors is an integer number (63256385716).

Almost surely, 2^126512771431 is an apocalyptic number.

126512771431 is a deficient number, since it is larger than the sum of its proper divisors (1).

126512771431 is an equidigital number, since it uses as much as digits as its factorization.

126512771431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 70560, while the sum is 40.

The spelling of 126512771431 in words is "one hundred twenty-six billion, five hundred twelve million, seven hundred seventy-one thousand, four hundred thirty-one".