2678655129127 has 4 divisors (see below), whose sum is σ = 2751051213736. Its totient is φ = 2606259044520.

The previous prime is 2678655129097. The next prime is 2678655129257. The reversal of 2678655129127 is 7219215568762.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2678655129127 - 2⁷ = 2678655128999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2678655124127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36198042249 + ... + 36198042322.

It is an arithmetic number, because the mean of its divisors is an integer number (687762803434).

Almost surely, 2^{2678655129127} is an apocalyptic number.

2678655129127 is a deficient number, since it is larger than the sum of its proper divisors (72396084609).

2678655129127 is an equidigital number, since it uses as much as digits as its factorization.

2678655129127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72396084608.

The product of its digits is 25401600, while the sum is 61.

The spelling of 2678655129127 in words is "two trillion, six hundred seventy-eight billion, six hundred fifty-five million, one hundred twenty-nine thousand, one hundred twenty-seven".