127929473779 has 2 divisors, whose sum is σ = 127929473780. Its totient is φ = 127929473778.

The previous prime is 127929473761. The next prime is 127929473797. The reversal of 127929473779 is 977374929721.

Together with next prime (127929473797) it forms an Ormiston pair, because they use the same digits, order apart.

It is a balanced prime because it is at equal distance from previous prime (127929473761) and next prime (127929473797).

It is a cyclic number.

It is not a de Polignac number, because 127929473779 - 2¹⁷ = 127929342707 is a prime.

It is a super-2 number, since 2×127929473779² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (127929473729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63964736889 + 63964736890.

It is an arithmetic number, because the mean of its divisors is an integer number (63964736890).

Almost surely, 2^127929473779 is an apocalyptic number.

127929473779 is a deficient number, since it is larger than the sum of its proper divisors (1).

127929473779 is an equidigital number, since it uses as much as digits as its factorization.

127929473779 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84015792, while the sum is 67.

The spelling of 127929473779 in words is "one hundred twenty-seven billion, nine hundred twenty-nine million, four hundred seventy-three thousand, seven hundred seventy-nine".