127628196556 has 48 divisors (see below), whose sum is σ = 255771648832. Its totient is φ = 54587520000.

The previous prime is 127628196533. The next prime is 127628196559. The reversal of 127628196556 is 655691826721.

It is a happy number.

It is a super-2 number, since 2×127628196556² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 127628196556.

It is not an unprimeable number, because it can be changed into a prime (127628196559) 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, 42527056 + ... + 42530056.

Almost surely, 2^127628196556 is an apocalyptic number.

It is an amenable number.

127628196556 is an abundant number, since it is smaller than the sum of its proper divisors (128143452276).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

127628196556 is a wasteful number, since it uses less digits than its factorization.

127628196556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5570 (or 5568 counting only the distinct ones).

The product of its digits is 10886400, while the sum is 58.

The spelling of 127628196556 in words is "one hundred twenty-seven billion, six hundred twenty-eight million, one hundred ninety-six thousand, five hundred fifty-six".