126377525291 has 2 divisors, whose sum is σ = 126377525292. Its totient is φ = 126377525290.

The previous prime is 126377525257. The next prime is 126377525317. The reversal of 126377525291 is 192525773621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 126377525291 - 2¹⁰ = 126377524267 is a prime.

It is not a weakly prime, because it can be changed into another prime (126377525201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63188762645 + 63188762646.

It is an arithmetic number, because the mean of its divisors is an integer number (63188762646).

Almost surely, 2^126377525291 is an apocalyptic number.

126377525291 is a deficient number, since it is larger than the sum of its proper divisors (1).

126377525291 is an equidigital number, since it uses as much as digits as its factorization.

126377525291 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1587600, while the sum is 50.

The spelling of 126377525291 in words is "one hundred twenty-six billion, three hundred seventy-seven million, five hundred twenty-five thousand, two hundred ninety-one".