127821620036 has 24 divisors (see below), whose sum is σ = 244032826464. Its totient is φ = 58098418880.

The previous prime is 127821620033. The next prime is 127821620063. The reversal of 127821620036 is 630026128721.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (127821620033) 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, 1574456 + ... + 1653648.

It is an arithmetic number, because the mean of its divisors is an integer number (10168034436).

Almost surely, 2^127821620036 is an apocalyptic number.

It is an amenable number.

127821620036 is a deficient number, since it is larger than the sum of its proper divisors (116211206428).

127821620036 is a wasteful number, since it uses less digits than its factorization.

127821620036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115891 (or 115889 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 38.

Adding to 127821620036 its reverse (630026128721), we get a palindrome (757847748757).

The spelling of 127821620036 in words is "one hundred twenty-seven billion, eight hundred twenty-one million, six hundred twenty thousand, thirty-six".