127377315809 has 8 divisors (see below), whose sum is σ = 130827332520. Its totient is φ = 123927687936.

The previous prime is 127377315799. The next prime is 127377315829. The reversal of 127377315809 is 908513773721.

It can be written as a sum of positive squares in 4 ways, for example, as 84457078225 + 42920237584 = 290615^2 + 207172^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 127377315809 - 2²⁴ = 127360538593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (127377315829) 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, 641897 + ... + 816569.

It is an arithmetic number, because the mean of its divisors is an integer number (16353416565).

Almost surely, 2^127377315809 is an apocalyptic number.

It is an amenable number.

127377315809 is a deficient number, since it is larger than the sum of its proper divisors (3450016711).

127377315809 is a wasteful number, since it uses less digits than its factorization.

127377315809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194419.

The product of its (nonzero) digits is 2222640, while the sum is 53.

The spelling of 127377315809 in words is "one hundred twenty-seven billion, three hundred seventy-seven million, three hundred fifteen thousand, eight hundred nine".