61145608738061 has 4 divisors (see below), whose sum is σ = 61145723067072. Its totient is φ = 61145494409052.

The previous prime is 61145608737977. The next prime is 61145608738087. The reversal of 61145608738061 is 16083780654116.

It is a happy number.

61145608738061 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61145608738061 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61145608737988 and 61145608738006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61145608738091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56358485 + ... + 57433178.

It is an arithmetic number, because the mean of its divisors is an integer number (15286430766768).

Almost surely, 2^{61145608738061} is an apocalyptic number.

It is an amenable number.

61145608738061 is a deficient number, since it is larger than the sum of its proper divisors (114329011).

61145608738061 is a wasteful number, since it uses less digits than its factorization.

61145608738061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114329010.

The product of its (nonzero) digits is 5806080, while the sum is 56.

The spelling of 61145608738061 in words is "sixty-one trillion, one hundred forty-five billion, six hundred eight million, seven hundred thirty-eight thousand, sixty-one".