127721363762467 has 2 divisors, whose sum is σ = 127721363762468. Its totient is φ = 127721363762466.

The previous prime is 127721363762453. The next prime is 127721363762513. The reversal of 127721363762467 is 764267363127721.

It is a weak prime.

It is an emirp because it is prime and its reverse (764267363127721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 127721363762467 - 2⁷ = 127721363762339 is a prime.

It is a super-2 number, since 2×127721363762467² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 127721363762399 and 127721363762408.

It is not a weakly prime, because it can be changed into another prime (127721363762437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63860681881233 + 63860681881234.

It is an arithmetic number, because the mean of its divisors is an integer number (63860681881234).

Almost surely, 2^{127721363762467} is an apocalyptic number.

127721363762467 is a deficient number, since it is larger than the sum of its proper divisors (1).

127721363762467 is an equidigital number, since it uses as much as digits as its factorization.

127721363762467 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 149361408, while the sum is 64.

The spelling of 127721363762467 in words is "one hundred twenty-seven trillion, seven hundred twenty-one billion, three hundred sixty-three million, seven hundred sixty-two thousand, four hundred sixty-seven".