75540641860 has 24 divisors (see below), whose sum is σ = 158732322840. Its totient is φ = 30197785344.

The previous prime is 75540641843. The next prime is 75540641887. The reversal of 75540641860 is 6814604557.

It can be written as a sum of positive squares in 4 ways, for example, as 3613692996 + 71926948864 = 60114^2 + 268192^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 75540641860.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1120905 + ... + 1186384.

It is an arithmetic number, because the mean of its divisors is an integer number (6613846785).

Almost surely, 2^75540641860 is an apocalyptic number.

It is an amenable number.

75540641860 is an abundant number, since it is smaller than the sum of its proper divisors (83191680980).

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

75540641860 is a wasteful number, since it uses less digits than its factorization.

75540641860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2308935 (or 2308933 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 46.

The spelling of 75540641860 in words is "seventy-five billion, five hundred forty million, six hundred forty-one thousand, eight hundred sixty".