127769011481 has 2 divisors, whose sum is σ = 127769011482. Its totient is φ = 127769011480.

The previous prime is 127769011441. The next prime is 127769011567. The reversal of 127769011481 is 184110967721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 95948160025 + 31820851456 = 309755^2 + 178384^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-127769011481 is a prime.

It is a super-2 number, since 2×127769011481² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (127769011441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63884505740 + 63884505741.

It is an arithmetic number, because the mean of its divisors is an integer number (63884505741).

Almost surely, 2^127769011481 is an apocalyptic number.

It is an amenable number.

127769011481 is a deficient number, since it is larger than the sum of its proper divisors (1).

127769011481 is an equidigital number, since it uses as much as digits as its factorization.

127769011481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 169344, while the sum is 47.

The spelling of 127769011481 in words is "one hundred twenty-seven billion, seven hundred sixty-nine million, eleven thousand, four hundred eighty-one".