127549197855 has 20 divisors (see below), whose sum is σ = 228643747992. Its totient is φ = 68026238640.

The previous prime is 127549197851. The next prime is 127549197871. The reversal of 127549197855 is 558791945721.

127549197855 is a `hidden beast` number, since 1 + 2 + 7 + 5 + 491 + 97 + 8 + 55 = 666.

It is not a de Polignac number, because 127549197855 - 2² = 127549197851 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 127549197792 and 127549197801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127549197851) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 157467741 + ... + 157468550.

Almost surely, 2^127549197855 is an apocalyptic number.

127549197855 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

127549197855 is a deficient number, since it is larger than the sum of its proper divisors (101094550137).

127549197855 is an equidigital number, since it uses as much as digits as its factorization.

127549197855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314936308 (or 314936299 counting only the distinct ones).

The product of its digits is 31752000, while the sum is 63.

The spelling of 127549197855 in words is "one hundred twenty-seven billion, five hundred forty-nine million, one hundred ninety-seven thousand, eight hundred fifty-five".