5001155665 has 12 divisors (see below), whose sum is σ = 6596566452. Its totient is φ = 3637203680.

The previous prime is 5001155657. The next prime is 5001155671. The reversal of 5001155665 is 5665511005.

It can be written as a sum of positive squares in 2 ways, for example, as 2839184656 + 2161971009 = 53284^2 + 46497^2 .

It is not a de Polignac number, because 5001155665 - 2³ = 5001155657 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5001155665.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4132582 + ... + 4133791.

It is an arithmetic number, because the mean of its divisors is an integer number (549713871).

Almost surely, 2^5001155665 is an apocalyptic number.

5001155665 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

5001155665 is a deficient number, since it is larger than the sum of its proper divisors (1595410787).

5001155665 is a wasteful number, since it uses less digits than its factorization.

5001155665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8266400 (or 8266389 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 34.

The square root of 5001155665 is about 70718.8494320998. The cubic root of 5001155665 is about 1710.1076804847.

The spelling of 5001155665 in words is "five billion, one million, one hundred fifty-five thousand, six hundred sixty-five".