7478136256 has 70 divisors (see below), whose sum is σ = 15778149800. Its totient is φ = 3516607488.

The previous prime is 7478136229. The next prime is 7478136269. The reversal of 7478136256 is 6526318747.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 5344645 + ... + 5346043.

It is an arithmetic number, because the mean of its divisors is an integer number (225402140).

Almost surely, 2^7478136256 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7478136256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7889074900).

7478136256 is an abundant number, since it is smaller than the sum of its proper divisors (8300013544).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7478136256 is an frugal number, since it uses more digits than its factorization.

7478136256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1479 (or 1418 counting only the distinct ones).

The product of its digits is 1693440, while the sum is 49.

The square root of 7478136256 is about 86476.2178636416. The cubic root of 7478136256 is about 1955.5298878709.

The spelling of 7478136256 in words is "seven billion, four hundred seventy-eight million, one hundred thirty-six thousand, two hundred fifty-six".