127099667947 has 4 divisors (see below), whose sum is σ = 145256763376. Its totient is φ = 108942572520.

The previous prime is 127099667939. The next prime is 127099667987. The reversal of 127099667947 is 749766990721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 749766990721 = 7 ⋅107109570103.

It is a cyclic number.

It is not a de Polignac number, because 127099667947 - 2³ = 127099667939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (127099667987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9078547704 + ... + 9078547717.

It is an arithmetic number, because the mean of its divisors is an integer number (36314190844).

Almost surely, 2^127099667947 is an apocalyptic number.

127099667947 is a deficient number, since it is larger than the sum of its proper divisors (18157095429).

127099667947 is an equidigital number, since it uses as much as digits as its factorization.

127099667947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18157095428.

The product of its (nonzero) digits is 72013536, while the sum is 67.

The spelling of 127099667947 in words is "one hundred twenty-seven billion, ninety-nine million, six hundred sixty-seven thousand, nine hundred forty-seven".