127356161603005 has 4 divisors (see below), whose sum is σ = 152827393923612. Its totient is φ = 101884929282400.

The previous prime is 127356161602997. The next prime is 127356161603009. The reversal of 127356161603005 is 500306161653721.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 32334724167769 + 95021437435236 = 5686363^2 + 9747894^2 .

It is not a de Polignac number, because 127356161603005 - 2³ = 127356161602997 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 (127356161603009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12735616160296 + ... + 12735616160305.

It is an arithmetic number, because the mean of its divisors is an integer number (38206848480903).

Almost surely, 2^{127356161603005} is an apocalyptic number.

It is an amenable number.

127356161603005 is a deficient number, since it is larger than the sum of its proper divisors (25471232320607).

127356161603005 is an equidigital number, since it uses as much as digits as its factorization.

127356161603005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25471232320606.

The product of its (nonzero) digits is 680400, while the sum is 46.

The spelling of 127356161603005 in words is "one hundred twenty-seven trillion, three hundred fifty-six billion, one hundred sixty-one million, six hundred three thousand, five".