6981276655079 has 4 divisors (see below), whose sum is σ = 6983869036776. Its totient is φ = 6978684273384.

The previous prime is 6981276655049. The next prime is 6981276655139. The reversal of 6981276655079 is 9705566721896.

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 6981276655079 - 2¹⁶ = 6981276589543 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 (6981276655039) 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, 1296186809 + ... + 1296192194.

It is an arithmetic number, because the mean of its divisors is an integer number (1745967259194).

Almost surely, 2^{6981276655079} is an apocalyptic number.

6981276655079 is a deficient number, since it is larger than the sum of its proper divisors (2592381697).

6981276655079 is a wasteful number, since it uses less digits than its factorization.

6981276655079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2592381696.

The product of its (nonzero) digits is 342921600, while the sum is 71.

The spelling of 6981276655079 in words is "six trillion, nine hundred eighty-one billion, two hundred seventy-six million, six hundred fifty-five thousand, seventy-nine".