1620305759047 has 2 divisors, whose sum is σ = 1620305759048. Its totient is φ = 1620305759046.

The previous prime is 1620305759029. The next prime is 1620305759069. The reversal of 1620305759047 is 7409575030261.

It is a weak prime.

It is an emirp because it is prime and its reverse (7409575030261) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1620305759047 - 2³⁵ = 1585946020679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1620305759077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 810152879523 + 810152879524.

It is an arithmetic number, because the mean of its divisors is an integer number (810152879524).

Almost surely, 2^{1620305759047} is an apocalyptic number.

1620305759047 is a deficient number, since it is larger than the sum of its proper divisors (1).

1620305759047 is an equidigital number, since it uses as much as digits as its factorization.

1620305759047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1587600, while the sum is 49.

The spelling of 1620305759047 in words is "one trillion, six hundred twenty billion, three hundred five million, seven hundred fifty-nine thousand, forty-seven".