61010005111 has 8 divisors (see below), whose sum is σ = 68703349248. Its totient is φ = 53674491000.

The previous prime is 61010005073. The next prime is 61010005129. The reversal of 61010005111 is 11150001016.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61010005111 - 2¹¹ = 61010003063 is a prime.

It is a super-2 number, since 2×61010005111² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61010005171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89457145 + ... + 89457826.

It is an arithmetic number, because the mean of its divisors is an integer number (8587918656).

Almost surely, 2^61010005111 is an apocalyptic number.

61010005111 is a deficient number, since it is larger than the sum of its proper divisors (7693344137).

61010005111 is a wasteful number, since it uses less digits than its factorization.

61010005111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178915013.

The product of its (nonzero) digits is 30, while the sum is 16.

Adding to 61010005111 its reverse (11150001016), we get a palindrome (72160006127).

The spelling of 61010005111 in words is "sixty-one billion, ten million, five thousand, one hundred eleven".