125971171563 has 16 divisors (see below), whose sum is σ = 170349198336. Its totient is φ = 82787268480.

The previous prime is 125971171523. The next prime is 125971171567. The reversal of 125971171563 is 365171179521.

It is not a de Polignac number, because 125971171563 - 2⁸ = 125971171307 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125971171567) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1830606 + ... + 1898172.

It is an arithmetic number, because the mean of its divisors is an integer number (10646824896).

Almost surely, 2^125971171563 is an apocalyptic number.

125971171563 is a deficient number, since it is larger than the sum of its proper divisors (44378026773).

125971171563 is an equidigital number, since it uses as much as digits as its factorization.

125971171563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76394.

The product of its digits is 396900, while the sum is 48.

The spelling of 125971171563 in words is "one hundred twenty-five billion, nine hundred seventy-one million, one hundred seventy-one thousand, five hundred sixty-three".