127073776647 has 4 divisors (see below), whose sum is σ = 169431702200. Its totient is φ = 84715851096.

The previous prime is 127073776639. The next prime is 127073776649. The reversal of 127073776647 is 746677370721.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 127073776647 - 2³ = 127073776639 is a prime.

It is a super-2 number, since 2×127073776647² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127073776649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21178962772 + ... + 21178962777.

It is an arithmetic number, because the mean of its divisors is an integer number (42357925550).

Almost surely, 2^127073776647 is an apocalyptic number.

127073776647 is a deficient number, since it is larger than the sum of its proper divisors (42357925553).

127073776647 is an equidigital number, since it uses as much as digits as its factorization.

127073776647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42357925552.

The product of its (nonzero) digits is 14521248, while the sum is 57.

The spelling of 127073776647 in words is "one hundred twenty-seven billion, seventy-three million, seven hundred seventy-six thousand, six hundred forty-seven".