7478368137551 has 8 divisors (see below), whose sum is σ = 7872198255600. Its totient is φ = 7084561199040.

The previous prime is 7478368137523. The next prime is 7478368137671. The reversal of 7478368137551 is 1557318638747.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7478368137551 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 (7478368137151) 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, 5130686 + ... + 6425003.

It is an arithmetic number, because the mean of its divisors is an integer number (984024781950).

Almost surely, 2^{7478368137551} is an apocalyptic number.

7478368137551 is a deficient number, since it is larger than the sum of its proper divisors (393830118049).

7478368137551 is a wasteful number, since it uses less digits than its factorization.

7478368137551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11589769.

The product of its digits is 118540800, while the sum is 65.

The spelling of 7478368137551 in words is "seven trillion, four hundred seventy-eight billion, three hundred sixty-eight million, one hundred thirty-seven thousand, five hundred fifty-one".