127561247365 has 8 divisors (see below), whose sum is σ = 153096517368. Its totient is φ = 102033650880.

The previous prime is 127561247339. The next prime is 127561247369. The reversal of 127561247365 is 563742165721.

It can be written as a sum of positive squares in 4 ways, for example, as 32400720004 + 95160527361 = 180002^2 + 308481^2 .

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

It is not a de Polignac number, because 127561247365 - 2⁷ = 127561247237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127561247369) 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, 1881742 + ... + 1948351.

It is an arithmetic number, because the mean of its divisors is an integer number (19137064671).

Almost surely, 2^127561247365 is an apocalyptic number.

It is an amenable number.

127561247365 is a deficient number, since it is larger than the sum of its proper divisors (25535270003).

127561247365 is an equidigital number, since it uses as much as digits as its factorization.

127561247365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3836759.

The product of its digits is 2116800, while the sum is 49.

The spelling of 127561247365 in words is "one hundred twenty-seven billion, five hundred sixty-one million, two hundred forty-seven thousand, three hundred sixty-five".