5615605845 has 18 divisors (see below), whose sum is σ = 9734588214. Its totient is φ = 2994721680.

The previous prime is 5615605799. The next prime is 5615605859. The reversal of 5615605845 is 5485065165.

5615605845 is a `hidden beast` number, since 5 + 6 + 1 + 5 + 60 + 584 + 5 = 666.

It can be written as a sum of positive squares in only one way, i.e., 4492484676 + 1123121169 = 67026^2 + 33513^2 .

It is not a de Polignac number, because 5615605845 - 2¹⁴ = 5615589461 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 5615605845.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 497110 + ... + 508280.

Almost surely, 2^5615605845 is an apocalyptic number.

It is an amenable number.

5615605845 is a deficient number, since it is larger than the sum of its proper divisors (4118982369).

5615605845 is an frugal number, since it uses more digits than its factorization.

5615605845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22353 (or 11179 counting only the distinct ones).

The product of its (nonzero) digits is 720000, while the sum is 45.

The square root of 5615605845 is about 74937.3461299505. The cubic root of 5615605845 is about 1777.4560559320.

Multiplying 5615605845 by its sum of digits (45), we get a square (252702263025 = 502695²).

5615605845 divided by its sum of digits (45) gives a square (124791241 = 11171²).

The spelling of 5615605845 in words is "five billion, six hundred fifteen million, six hundred five thousand, eight hundred forty-five".