127072153717 has 4 divisors (see below), whose sum is σ = 127072902060. Its totient is φ = 127071405376.

The previous prime is 127072153709. The next prime is 127072153739. The reversal of 127072153717 is 717351270721.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 717351270721 = 1063 ⋅674836567.

It can be written as a sum of positive squares in 2 ways, for example, as 70097328081 + 56974825636 = 264759^2 + 238694^2 .

It is a cyclic number.

It is not a de Polignac number, because 127072153717 - 2³ = 127072153709 is a prime.

It is a super-2 number, since 2×127072153717² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127072153517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16509 + ... + 504397.

It is an arithmetic number, because the mean of its divisors is an integer number (31768225515).

Almost surely, 2^127072153717 is an apocalyptic number.

It is an amenable number.

127072153717 is a deficient number, since it is larger than the sum of its proper divisors (748343).

127072153717 is an equidigital number, since it uses as much as digits as its factorization.

127072153717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 748342.

The product of its (nonzero) digits is 144060, while the sum is 43.

The spelling of 127072153717 in words is "one hundred twenty-seven billion, seventy-two million, one hundred fifty-three thousand, seven hundred seventeen".