61774443343 has 4 divisors (see below), whose sum is σ = 62051459008. Its totient is φ = 61497427680.

The previous prime is 61774443301. The next prime is 61774443361. The reversal of 61774443343 is 34334447716.

It is a happy number.

61774443343 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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61774443343 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61774443293 and 61774443302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61774443043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138507498 + ... + 138507943.

It is an arithmetic number, because the mean of its divisors is an integer number (15512864752).

Almost surely, 2^61774443343 is an apocalyptic number.

61774443343 is a deficient number, since it is larger than the sum of its proper divisors (277015665).

61774443343 is a wasteful number, since it uses less digits than its factorization.

61774443343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277015664.

The product of its digits is 2032128, while the sum is 46.

The spelling of 61774443343 in words is "sixty-one billion, seven hundred seventy-four million, four hundred forty-three thousand, three hundred forty-three".