127730920011 has 4 divisors (see below), whose sum is σ = 170307893352. Its totient is φ = 85153946672.

The previous prime is 127730919991. The next prime is 127730920033. The reversal of 127730920011 is 110029037721.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-127730920011 is a prime.

It is not an unprimeable number, because it can be changed into a prime (127730920411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21288486666 + ... + 21288486671.

It is an arithmetic number, because the mean of its divisors is an integer number (42576973338).

Almost surely, 2^127730920011 is an apocalyptic number.

127730920011 is a deficient number, since it is larger than the sum of its proper divisors (42576973341).

127730920011 is an equidigital number, since it uses as much as digits as its factorization.

127730920011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42576973340.

The product of its (nonzero) digits is 5292, while the sum is 33.

Adding to 127730920011 its reverse (110029037721), we get a palindrome (237759957732).

The spelling of 127730920011 in words is "one hundred twenty-seven billion, seven hundred thirty million, nine hundred twenty thousand, eleven".