127399890568335 has 128 divisors (see below), whose sum is σ = 258183853498368. Its totient is φ = 52104064320000.

The previous prime is 127399890568241. The next prime is 127399890568339. The reversal of 127399890568335 is 533865098993721.

It is a Cunningham number, because it is equal to 11287156²-1.

It is not a de Polignac number, because 127399890568335 - 2⁹ = 127399890567823 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127399890568339) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 78203860 + ... + 79816310.

It is an arithmetic number, because the mean of its divisors is an integer number (2017061355456).

Almost surely, 2^{127399890568335} is an apocalyptic number.

127399890568335 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

127399890568335 is an abundant number, since it is smaller than the sum of its proper divisors (130783962930033).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

127399890568335 is a wasteful number, since it uses less digits than its factorization.

127399890568335 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1613565.

The product of its (nonzero) digits is 2645395200, while the sum is 78.

The spelling of 127399890568335 in words is "one hundred twenty-seven trillion, three hundred ninety-nine billion, eight hundred ninety million, five hundred sixty-eight thousand, three hundred thirty-five".