5061661511 has 4 divisors (see below), whose sum is σ = 5067812592. Its totient is φ = 5055510432.

The previous prime is 5061661463. The next prime is 5061661571. The reversal of 5061661511 is 1151661605.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5061661511 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 (5061661571) 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, 3074306 + ... + 3075951.

It is an arithmetic number, because the mean of its divisors is an integer number (1266953148).

Almost surely, 2^5061661511 is an apocalyptic number.

5061661511 is a deficient number, since it is larger than the sum of its proper divisors (6151081).

5061661511 is an equidigital number, since it uses as much as digits as its factorization.

5061661511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6151080.

The product of its (nonzero) digits is 5400, while the sum is 32.

The square root of 5061661511 is about 71145.3548097133. The cubic root of 5061661511 is about 1716.9765605414.

The spelling of 5061661511 in words is "five billion, sixty-one million, six hundred sixty-one thousand, five hundred eleven".