127373545373721 has 32 divisors (see below), whose sum is σ = 172668421336320. Its totient is φ = 83508638880000.

The previous prime is 127373545373713. The next prime is 127373545373759.

127373545373721 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 127373545373721 - 2³ = 127373545373713 is a prime.

It is a super-2 number, since 2×127373545373721² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (127373545373761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 412949671 + ... + 413258003.

It is an arithmetic number, because the mean of its divisors is an integer number (5395888166760).

Almost surely, 2^{127373545373721} is an apocalyptic number.

It is an amenable number.

127373545373721 is a deficient number, since it is larger than the sum of its proper divisors (45294875962599).

127373545373721 is a wasteful number, since it uses less digits than its factorization.

127373545373721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317617.

The product of its digits is 77792400, while the sum is 60.

The spelling of 127373545373721 in words is "one hundred twenty-seven trillion, three hundred seventy-three billion, five hundred forty-five million, three hundred seventy-three thousand, seven hundred twenty-one".