127721363762797 has 8 divisors (see below), whose sum is σ = 145970582314752. Its totient is φ = 109472972571600.

The previous prime is 127721363762789. The next prime is 127721363762843. The reversal of 127721363762797 is 797267363127721.

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

It is a cyclic number.

It is not a de Polignac number, because 127721363762797 - 2³ = 127721363762789 is a prime.

It is a super-2 number, since 2×127721363762797² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127721363762767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 206509354 + ... + 207126907.

It is an arithmetic number, because the mean of its divisors is an integer number (18246322789344).

Almost surely, 2^{127721363762797} is an apocalyptic number.

It is an amenable number.

127721363762797 is a deficient number, since it is larger than the sum of its proper divisors (18249218551955).

127721363762797 is an equidigital number, since it uses as much as digits as its factorization.

127721363762797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413680379.

The product of its digits is 392073696, while the sum is 70.

The spelling of 127721363762797 in words is "one hundred twenty-seven trillion, seven hundred twenty-one billion, three hundred sixty-three million, seven hundred sixty-two thousand, seven hundred ninety-seven".