127872630497 has 6 divisors (see below), whose sum is σ = 135396111078. Its totient is φ = 120349323392.

The previous prime is 127872630467. The next prime is 127872630521. The reversal of 127872630497 is 794036278721.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 44739018256 + 83133612241 = 211516^2 + 288329^2 .

It is not a de Polignac number, because 127872630497 - 2¹⁶ = 127872564961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (127872630467) 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 5 ways as a sum of consecutive naturals, for example, 1431029 + ... + 1517757.

It is an arithmetic number, because the mean of its divisors is an integer number (22566018513).

Almost surely, 2^127872630497 is an apocalyptic number.

127872630497 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

127872630497 is a deficient number, since it is larger than the sum of its proper divisors (7523480581).

127872630497 is an frugal number, since it uses more digits than its factorization.

127872630497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173475 (or 86746 counting only the distinct ones).

The product of its (nonzero) digits is 7112448, while the sum is 56.

The spelling of 127872630497 in words is "one hundred twenty-seven billion, eight hundred seventy-two million, six hundred thirty thousand, four hundred ninety-seven".