7540478843 has 16 divisors (see below), whose sum is σ = 8245960704. Its totient is φ = 6864343680.

The previous prime is 7540478831. The next prime is 7540478849. The reversal of 7540478843 is 3488740457.

It is a cyclic number.

It is not a de Polignac number, because 7540478843 - 2⁶ = 7540478779 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7540478791 and 7540478800.

It is not an unprimeable number, because it can be changed into a prime (7540478849) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1825046 + ... + 1829172.

It is an arithmetic number, because the mean of its divisors is an integer number (515372544).

Almost surely, 2^7540478843 is an apocalyptic number.

7540478843 is a deficient number, since it is larger than the sum of its proper divisors (705481861).

7540478843 is a wasteful number, since it uses less digits than its factorization.

7540478843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7642.

The product of its (nonzero) digits is 3010560, while the sum is 50.

The square root of 7540478843 is about 86835.9305990326. The cubic root of 7540478843 is about 1960.9490443319.

The spelling of 7540478843 in words is "seven billion, five hundred forty million, four hundred seventy-eight thousand, eight hundred forty-three".