5540645815 has 8 divisors (see below), whose sum is σ = 6742420128. Its totient is φ = 4370086560.

The previous prime is 5540645791. The next prime is 5540645833. The reversal of 5540645815 is 5185460455.

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

It is not a de Polignac number, because 5540645815 - 2⁹ = 5540645303 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 7803372 + ... + 7804081.

It is an arithmetic number, because the mean of its divisors is an integer number (842802516).

Almost surely, 2^5540645815 is an apocalyptic number.

5540645815 is a deficient number, since it is larger than the sum of its proper divisors (1201774313).

5540645815 is a wasteful number, since it uses less digits than its factorization.

5540645815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15607529.

The product of its (nonzero) digits is 480000, while the sum is 43.

The square root of 5540645815 is about 74435.5144739391. The cubic root of 5540645815 is about 1769.5117994544.

The spelling of 5540645815 in words is "five billion, five hundred forty million, six hundred forty-five thousand, eight hundred fifteen".