61919608343 has 2 divisors, whose sum is σ = 61919608344. Its totient is φ = 61919608342.

The previous prime is 61919608337. The next prime is 61919608357. The reversal of 61919608343 is 34380691916.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61919608343 - 2⁴ = 61919608327 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61919608291 and 61919608300.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61919608363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30959804171 + 30959804172.

It is an arithmetic number, because the mean of its divisors is an integer number (30959804172).

Almost surely, 2^61919608343 is an apocalyptic number.

61919608343 is a deficient number, since it is larger than the sum of its proper divisors (1).

61919608343 is an equidigital number, since it uses as much as digits as its factorization.

61919608343 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 839808, while the sum is 50.

The spelling of 61919608343 in words is "sixty-one billion, nine hundred nineteen million, six hundred eight thousand, three hundred forty-three".