127770554721 has 8 divisors (see below), whose sum is σ = 170407906240. Its totient is φ = 85156786512.

The previous prime is 127770554689. The next prime is 127770554759. The reversal of 127770554721 is 127455077721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 127770554721 - 2⁵ = 127770554689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (127770554761) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5883181 + ... + 5904858.

It is an arithmetic number, because the mean of its divisors is an integer number (21300988280).

Almost surely, 2^127770554721 is an apocalyptic number.

It is an amenable number.

127770554721 is a deficient number, since it is larger than the sum of its proper divisors (42637351519).

127770554721 is a wasteful number, since it uses less digits than its factorization.

127770554721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11791655.

The product of its (nonzero) digits is 960400, while the sum is 48.

The spelling of 127770554721 in words is "one hundred twenty-seven billion, seven hundred seventy million, five hundred fifty-four thousand, seven hundred twenty-one".