127449957887 has 16 divisors (see below), whose sum is σ = 149064782592. Its totient is φ = 106687748160.

The previous prime is 127449957851. The next prime is 127449957917. The reversal of 127449957887 is 788759944721.

It is not a de Polignac number, because 127449957887 - 2¹⁰ = 127449956863 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 127449957887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127449957787) 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, 2572187 + ... + 2621267.

It is an arithmetic number, because the mean of its divisors is an integer number (9316548912).

Almost surely, 2^127449957887 is an apocalyptic number.

127449957887 is a deficient number, since it is larger than the sum of its proper divisors (21614824705).

127449957887 is an equidigital number, since it uses as much as digits as its factorization.

127449957887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57758.

The product of its digits is 284497920, while the sum is 71.

The spelling of 127449957887 in words is "one hundred twenty-seven billion, four hundred forty-nine million, nine hundred fifty-seven thousand, eight hundred eighty-seven".