127577749945 has 8 divisors (see below), whose sum is σ = 153638117640. Its totient is φ = 101698988160.

The previous prime is 127577749927. The next prime is 127577749973. The reversal of 127577749945 is 549947775721.

It can be written as a sum of positive squares in 4 ways, for example, as 19202476329 + 108375273616 = 138573^2 + 329204^2 .

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

It is not a de Polignac number, because 127577749945 - 2¹⁵ = 127577717177 is a prime.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 45399930 + ... + 45402739.

It is an arithmetic number, because the mean of its divisors is an integer number (19204764705).

Almost surely, 2^127577749945 is an apocalyptic number.

It is an amenable number.

127577749945 is a deficient number, since it is larger than the sum of its proper divisors (26060367695).

127577749945 is an equidigital number, since it uses as much as digits as its factorization.

127577749945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90802955.

The product of its digits is 155584800, while the sum is 67.

The spelling of 127577749945 in words is "one hundred twenty-seven billion, five hundred seventy-seven million, seven hundred forty-nine thousand, nine hundred forty-five".