125911177971 has 16 divisors (see below), whose sum is σ = 170570928000. Its totient is φ = 82598807808.

The previous prime is 125911177969. The next prime is 125911177979. The reversal of 125911177971 is 179771119521.

It is not a de Polignac number, because 125911177971 - 2¹ = 125911177969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125911177979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 150421 + ... + 523878.

It is an arithmetic number, because the mean of its divisors is an integer number (10660683000).

Almost surely, 2^125911177971 is an apocalyptic number.

125911177971 is a deficient number, since it is larger than the sum of its proper divisors (44659750029).

125911177971 is an equidigital number, since it uses as much as digits as its factorization.

125911177971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 675298.

The product of its digits is 277830, while the sum is 51.

The spelling of 125911177971 in words is "one hundred twenty-five billion, nine hundred eleven million, one hundred seventy-seven thousand, nine hundred seventy-one".