127673425865 has 16 divisors (see below), whose sum is σ = 153658357776. Its totient is φ = 101838720000.

The previous prime is 127673425861. The next prime is 127673425903. The reversal of 127673425865 is 568524376721.

It can be written as a sum of positive squares in 8 ways, for example, as 10684116496 + 116989309369 = 103364^2 + 342037^2 .

It is not a de Polignac number, because 127673425865 - 2² = 127673425861 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 127673425865.

It is not an unprimeable number, because it can be changed into a prime (127673425861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10812965 + ... + 10824765.

It is an arithmetic number, because the mean of its divisors is an integer number (9603647361).

Almost surely, 2^127673425865 is an apocalyptic number.

It is an amenable number.

127673425865 is a deficient number, since it is larger than the sum of its proper divisors (25984931911).

127673425865 is a wasteful number, since it uses less digits than its factorization.

127673425865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17980.

The product of its digits is 16934400, while the sum is 56.

The spelling of 127673425865 in words is "one hundred twenty-seven billion, six hundred seventy-three million, four hundred twenty-five thousand, eight hundred sixty-five".