125770043778571 has 2 divisors, whose sum is σ = 125770043778572. Its totient is φ = 125770043778570.

The previous prime is 125770043778569. The next prime is 125770043778601. The reversal of 125770043778571 is 175877340077521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 125770043778571 - 2¹ = 125770043778569 is a prime.

Together with 125770043778569, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (125770043778971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62885021889285 + 62885021889286.

It is an arithmetic number, because the mean of its divisors is an integer number (62885021889286).

Almost surely, 2^{125770043778571} is an apocalyptic number.

125770043778571 is a deficient number, since it is larger than the sum of its proper divisors (1).

125770043778571 is an equidigital number, since it uses as much as digits as its factorization.

125770043778571 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80673600, while the sum is 64.

The spelling of 125770043778571 in words is "one hundred twenty-five trillion, seven hundred seventy billion, forty-three million, seven hundred seventy-eight thousand, five hundred seventy-one".