5000913661 has 4 divisors (see below), whose sum is σ = 5001601500. Its totient is φ = 5000225824.

The previous prime is 5000913641. The next prime is 5000913719. The reversal of 5000913661 is 1663190005.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1943487225 + 3057426436 = 44085^2 + 55294^2 .

It is a cyclic number.

It is not a de Polignac number, because 5000913661 - 2¹¹ = 5000911613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5000913611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 332896 + ... + 347593.

It is an arithmetic number, because the mean of its divisors is an integer number (1250400375).

Almost surely, 2^5000913661 is an apocalyptic number.

It is an amenable number.

5000913661 is a deficient number, since it is larger than the sum of its proper divisors (687839).

5000913661 is an equidigital number, since it uses as much as digits as its factorization.

5000913661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 687838.

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 5000913661 is about 70717.1383824317. The cubic root of 5000913661 is about 1710.0800962220.

The spelling of 5000913661 in words is "five billion, nine hundred thirteen thousand, six hundred sixty-one".