1612353406691 has 2 divisors, whose sum is σ = 1612353406692. Its totient is φ = 1612353406690.

The previous prime is 1612353406627. The next prime is 1612353406787. The reversal of 1612353406691 is 1966043532161.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1612353406691 - 2⁶ = 1612353406627 is a prime.

It is not a weakly prime, because it can be changed into another prime (1612353403691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 806176703345 + 806176703346.

It is an arithmetic number, because the mean of its divisors is an integer number (806176703346).

Almost surely, 2^{1612353406691} is an apocalyptic number.

1612353406691 is a deficient number, since it is larger than the sum of its proper divisors (1).

1612353406691 is an equidigital number, since it uses as much as digits as its factorization.

1612353406691 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 699840, while the sum is 47.

The spelling of 1612353406691 in words is "one trillion, six hundred twelve billion, three hundred fifty-three million, four hundred six thousand, six hundred ninety-one".