61894282843 has 2 divisors, whose sum is σ = 61894282844. Its totient is φ = 61894282842.

The previous prime is 61894282841. The next prime is 61894282949. The reversal of 61894282843 is 34828249816.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61894282843 - 2¹ = 61894282841 is a prime.

Together with 61894282841, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (61894282841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30947141421 + 30947141422.

It is an arithmetic number, because the mean of its divisors is an integer number (30947141422).

Almost surely, 2^61894282843 is an apocalyptic number.

61894282843 is a deficient number, since it is larger than the sum of its proper divisors (1).

61894282843 is an equidigital number, since it uses as much as digits as its factorization.

61894282843 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5308416, while the sum is 55.

The spelling of 61894282843 in words is "sixty-one billion, eight hundred ninety-four million, two hundred eighty-two thousand, eight hundred forty-three".