6518728278842 has 16 divisors (see below), whose sum is σ = 10869938967552. Its totient is φ = 2911590794160.

The previous prime is 6518728278787. The next prime is 6518728278851. The reversal of 6518728278842 is 2488728278156.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4043875298 + ... + 4043876909.

It is an arithmetic number, because the mean of its divisors is an integer number (679371185472).

Almost surely, 2^{6518728278842} is an apocalyptic number.

6518728278842 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

6518728278842 is a deficient number, since it is larger than the sum of its proper divisors (4351210688710).

6518728278842 is a wasteful number, since it uses less digits than its factorization.

6518728278842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8087752253.

The product of its digits is 192675840, while the sum is 68.

The spelling of 6518728278842 in words is "six trillion, five hundred eighteen billion, seven hundred twenty-eight million, two hundred seventy-eight thousand, eight hundred forty-two".