127515454145 has 8 divisors (see below), whose sum is σ = 155905687656. Its totient is φ = 100087601536.

The previous prime is 127515454123. The next prime is 127515454147. The reversal of 127515454145 is 541454515721.

It can be written as a sum of positive squares in 4 ways, for example, as 7630546609 + 119884907536 = 87353^2 + 346244^2 .

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

It is not a de Polignac number, because 127515454145 - 2⁸ = 127515453889 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 127515454096 and 127515454105.

It is not an unprimeable number, because it can be changed into a prime (127515454147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 240594932 + ... + 240595461.

It is an arithmetic number, because the mean of its divisors is an integer number (19488210957).

Almost surely, 2^127515454145 is an apocalyptic number.

It is an amenable number.

127515454145 is a deficient number, since it is larger than the sum of its proper divisors (28390233511).

127515454145 is an equidigital number, since it uses as much as digits as its factorization.

127515454145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481190451.

The product of its digits is 560000, while the sum is 44.

Adding to 127515454145 its reverse (541454515721), we get a palindrome (668969969866).

The spelling of 127515454145 in words is "one hundred twenty-seven billion, five hundred fifteen million, four hundred fifty-four thousand, one hundred forty-five".