61105005061 has 8 divisors (see below), whose sum is σ = 61253702784. Its totient is φ = 60956474880.

The previous prime is 61105005029. The next prime is 61105005103. The reversal of 61105005061 is 16050050116.

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 61105005061 - 2⁵ = 61105005029 is a prime.

It is a super-2 number, since 2×61105005061² (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 (61105005001) 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, 704500 + ... + 786466.

It is an arithmetic number, because the mean of its divisors is an integer number (7656712848).

Almost surely, 2^61105005061 is an apocalyptic number.

It is an amenable number.

61105005061 is a deficient number, since it is larger than the sum of its proper divisors (148697723).

61105005061 is a wasteful number, since it uses less digits than its factorization.

61105005061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83771.

The product of its (nonzero) digits is 900, while the sum is 25.

Adding to 61105005061 its reverse (16050050116), we get a palindrome (77155055177).

The spelling of 61105005061 in words is "sixty-one billion, one hundred five million, five thousand, sixty-one".