61756146113 has 6 divisors (see below), whose sum is σ = 64557937794. Its totient is φ = 59071095776.

The previous prime is 61756146103. The next prime is 61756146121. The reversal of 61756146113 is 31164165716.

It can be written as a sum of positive squares in only one way, i.e., 41676405904 + 20079740209 = 204148^2 + 141703^2 .

It is a de Polignac number, because none of the positive numbers 2^k-61756146113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61756146103) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 58370120 + ... + 58371177.

It is an arithmetic number, because the mean of its divisors is an integer number (10759656299).

Almost surely, 2^61756146113 is an apocalyptic number.

It is an amenable number.

61756146113 is a deficient number, since it is larger than the sum of its proper divisors (2801791681).

61756146113 is a wasteful number, since it uses less digits than its factorization.

61756146113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116741343 (or 116741320 counting only the distinct ones).

The product of its digits is 90720, while the sum is 41.

The spelling of 61756146113 in words is "sixty-one billion, seven hundred fifty-six million, one hundred forty-six thousand, one hundred thirteen".