61656435443 has 2 divisors, whose sum is σ = 61656435444. Its totient is φ = 61656435442.

The previous prime is 61656435427. The next prime is 61656435461. The reversal of 61656435443 is 34453465616.

61656435443 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61656435443 - 2⁴ = 61656435427 is a prime.

It is not a weakly prime, because it can be changed into another prime (61656435943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30828217721 + 30828217722.

It is an arithmetic number, because the mean of its divisors is an integer number (30828217722).

Almost surely, 2^61656435443 is an apocalyptic number.

61656435443 is a deficient number, since it is larger than the sum of its proper divisors (1).

61656435443 is an equidigital number, since it uses as much as digits as its factorization.

61656435443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3110400, while the sum is 47.

The spelling of 61656435443 in words is "sixty-one billion, six hundred fifty-six million, four hundred thirty-five thousand, four hundred forty-three".