5121478845 has 96 divisors (see below), whose sum is σ = 10696458240. Its totient is φ = 2217317760.

The previous prime is 5121478841. The next prime is 5121478849. The reversal of 5121478845 is 5488741215.

5121478845 is a `hidden beast` number, since 512 + 14 + 7 + 88 + 45 = 666.

It is an interprime number because it is at equal distance from previous prime (5121478841) and next prime (5121478849).

It is not a de Polignac number, because 5121478845 - 2² = 5121478841 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 5121478845.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5121478841) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 453376 + ... + 464534.

It is an arithmetic number, because the mean of its divisors is an integer number (111421440).

Almost surely, 2^5121478845 is an apocalyptic number.

It is an amenable number.

5121478845 is an abundant number, since it is smaller than the sum of its proper divisors (5574979395).

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

5121478845 is a wasteful number, since it uses less digits than its factorization.

5121478845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11255 (or 11252 counting only the distinct ones).

The product of its digits is 358400, while the sum is 45.

The square root of 5121478845 is about 71564.5082774974. The cubic root of 5121478845 is about 1723.7136774560.

The spelling of 5121478845 in words is "five billion, one hundred twenty-one million, four hundred seventy-eight thousand, eight hundred forty-five".