127320251611 has 4 divisors (see below), whose sum is σ = 145508858992. Its totient is φ = 109131644232.

The previous prime is 127320251609. The next prime is 127320251623. The reversal of 127320251611 is 116152023721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 116152023721 = 12479 ⋅9307799.

It is a cyclic number.

It is not a de Polignac number, because 127320251611 - 2¹ = 127320251609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (127320051611) 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, 9094303680 + ... + 9094303693.

It is an arithmetic number, because the mean of its divisors is an integer number (36377214748).

Almost surely, 2^127320251611 is an apocalyptic number.

127320251611 is a deficient number, since it is larger than the sum of its proper divisors (18188607381).

127320251611 is an equidigital number, since it uses as much as digits as its factorization.

127320251611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18188607380.

The product of its (nonzero) digits is 5040, while the sum is 31.

The spelling of 127320251611 in words is "one hundred twenty-seven billion, three hundred twenty million, two hundred fifty-one thousand, six hundred eleven".