61116641511 has 8 divisors (see below), whose sum is σ = 81854277120. Its totient is φ = 40561716792.

The previous prime is 61116641507. The next prime is 61116641527. The reversal of 61116641511 is 11514661116.

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

It is not a de Polignac number, because 61116641511 - 2² = 61116641507 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61116641501) 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, 45676941 + ... + 45678278.

It is an arithmetic number, because the mean of its divisors is an integer number (10231784640).

Almost surely, 2^61116641511 is an apocalyptic number.

61116641511 is a deficient number, since it is larger than the sum of its proper divisors (20737635609).

61116641511 is a wasteful number, since it uses less digits than its factorization.

61116641511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91355445.

The product of its digits is 4320, while the sum is 33.

The spelling of 61116641511 in words is "sixty-one billion, one hundred sixteen million, six hundred forty-one thousand, five hundred eleven".