10516220611 has 4 divisors (see below), whose sum is σ = 11325160672. Its totient is φ = 9707280552.

The previous prime is 10516220591. The next prime is 10516220651. The reversal of 10516220611 is 11602261501.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11602261501 = 1831 ⋅6336571.

It is a cyclic number.

It is not a de Polignac number, because 10516220611 - 2⁵ = 10516220579 is a prime.

It is a super-5 number, since 5×10516220611⁵ (a number of 51 digits) contains 55555 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10516220651) 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, 404470011 + ... + 404470036.

It is an arithmetic number, because the mean of its divisors is an integer number (2831290168).

Almost surely, 2^10516220611 is an apocalyptic number.

10516220611 is a deficient number, since it is larger than the sum of its proper divisors (808940061).

10516220611 is an equidigital number, since it uses as much as digits as its factorization.

10516220611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 808940060.

The product of its (nonzero) digits is 720, while the sum is 25.

The spelling of 10516220611 in words is "ten billion, five hundred sixteen million, two hundred twenty thousand, six hundred eleven".