127980999881279 has 32 divisors (see below), whose sum is σ = 134045549568000. Its totient is φ = 122047277299200.

The previous prime is 127980999881257. The next prime is 127980999881291. The reversal of 127980999881279 is 972188999089721.

It is a cyclic number.

It is not a de Polignac number, because 127980999881279 - 2¹⁶ = 127980999815743 is a prime.

It is a super-2 number, since 2×127980999881279² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (89).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 127980999881194 and 127980999881203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127980999881249) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1704580262 + ... + 1704655340.

It is an arithmetic number, because the mean of its divisors is an integer number (4188923424000).

Almost surely, 2^{127980999881279} is an apocalyptic number.

127980999881279 is a deficient number, since it is larger than the sum of its proper divisors (6064549686721).

127980999881279 is a wasteful number, since it uses less digits than its factorization.

127980999881279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77279.

The product of its (nonzero) digits is 5925685248, while the sum is 89.

The spelling of 127980999881279 in words is "one hundred twenty-seven trillion, nine hundred eighty billion, nine hundred ninety-nine million, eight hundred eighty-one thousand, two hundred seventy-nine".