61738919041 has 4 divisors (see below), whose sum is σ = 62584657732. Its totient is φ = 60893180352.

The previous prime is 61738919027. The next prime is 61738919051. The reversal of 61738919041 is 14091983716.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 21660480625 + 40078438416 = 147175^2 + 200196^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61738919041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61738919051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 422869236 + ... + 422869381.

It is an arithmetic number, because the mean of its divisors is an integer number (15646164433).

Almost surely, 2^61738919041 is an apocalyptic number.

It is an amenable number.

61738919041 is a deficient number, since it is larger than the sum of its proper divisors (845738691).

61738919041 is an equidigital number, since it uses as much as digits as its factorization.

61738919041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 845738690.

The product of its (nonzero) digits is 326592, while the sum is 49.

The spelling of 61738919041 in words is "sixty-one billion, seven hundred thirty-eight million, nine hundred nineteen thousand, forty-one".