127449957851 has 2 divisors, whose sum is σ = 127449957852. Its totient is φ = 127449957850.

The previous prime is 127449957839. The next prime is 127449957917. The reversal of 127449957851 is 158759944721.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 127449957851 - 2⁶ = 127449957787 is a prime.

It is not a weakly prime, because it can be changed into another prime (127449957821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63724978925 + 63724978926.

It is an arithmetic number, because the mean of its divisors is an integer number (63724978926).

Almost surely, 2^127449957851 is an apocalyptic number.

127449957851 is a deficient number, since it is larger than the sum of its proper divisors (1).

127449957851 is an equidigital number, since it uses as much as digits as its factorization.

127449957851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25401600, while the sum is 62.

The spelling of 127449957851 in words is "one hundred twenty-seven billion, four hundred forty-nine million, nine hundred fifty-seven thousand, eight hundred fifty-one".