127577987122 has 8 divisors (see below), whose sum is σ = 196539061356. Its totient is φ = 62064966672.

The previous prime is 127577987059. The next prime is 127577987123. The reversal of 127577987122 is 221789775721.

It can be written as a sum of positive squares in 2 ways, for example, as 126756648841 + 821338281 = 356029^2 + 28659^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×127577987122² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (127577987123) 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, 862013353 + ... + 862013500.

Almost surely, 2^127577987122 is an apocalyptic number.

127577987122 is a deficient number, since it is larger than the sum of its proper divisors (68961074234).

127577987122 is a wasteful number, since it uses less digits than its factorization.

127577987122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1724026892.

The product of its digits is 6914880, while the sum is 58.

The spelling of 127577987122 in words is "one hundred twenty-seven billion, five hundred seventy-seven million, nine hundred eighty-seven thousand, one hundred twenty-two".