7278513968947 has 8 divisors (see below), whose sum is σ = 7839336375360. Its totient is φ = 6717825379200.

The previous prime is 7278513968941. The next prime is 7278513968969. The reversal of 7278513968947 is 7498693158727.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7278513968947 - 2³⁹ = 6728758155059 is a prime.

It is a super-2 number, since 2×7278513968947² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7278513968941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33341179 + ... + 33558772.

It is an arithmetic number, because the mean of its divisors is an integer number (979917046920).

Almost surely, 2^{7278513968947} is an apocalyptic number.

7278513968947 is a deficient number, since it is larger than the sum of its proper divisors (560822406413).

7278513968947 is a wasteful number, since it uses less digits than its factorization.

7278513968947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66908333.

The product of its digits is 1280240640, while the sum is 76.

The spelling of 7278513968947 in words is "seven trillion, two hundred seventy-eight billion, five hundred thirteen million, nine hundred sixty-eight thousand, nine hundred forty-seven".