125216061871 has 2 divisors, whose sum is σ = 125216061872. Its totient is φ = 125216061870.

The previous prime is 125216061857. The next prime is 125216061899. The reversal of 125216061871 is 178160612521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 125216061871 - 2⁷ = 125216061743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125216061821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62608030935 + 62608030936.

It is an arithmetic number, because the mean of its divisors is an integer number (62608030936).

Almost surely, 2^125216061871 is an apocalyptic number.

125216061871 is a deficient number, since it is larger than the sum of its proper divisors (1).

125216061871 is an equidigital number, since it uses as much as digits as its factorization.

125216061871 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 40.

The spelling of 125216061871 in words is "one hundred twenty-five billion, two hundred sixteen million, sixty-one thousand, eight hundred seventy-one".