6951684138049 has 4 divisors (see below), whose sum is σ = 7944781872064. Its totient is φ = 5958586404036.

The previous prime is 6951684138043. The next prime is 6951684138059. The reversal of 6951684138049 is 9408314861596.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 6951684138049 - 2³ = 6951684138041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6951684138041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 496548866997 + ... + 496548867010.

It is an arithmetic number, because the mean of its divisors is an integer number (1986195468016).

Almost surely, 2^{6951684138049} is an apocalyptic number.

It is an amenable number.

6951684138049 is a deficient number, since it is larger than the sum of its proper divisors (993097734015).

6951684138049 is an equidigital number, since it uses as much as digits as its factorization.

6951684138049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 993097734014.

The product of its (nonzero) digits is 44789760, while the sum is 64.

The spelling of 6951684138049 in words is "six trillion, nine hundred fifty-one billion, six hundred eighty-four million, one hundred thirty-eight thousand, forty-nine".