1613628043697 has 2 divisors, whose sum is σ = 1613628043698. Its totient is φ = 1613628043696.

The previous prime is 1613628043691. The next prime is 1613628043721. The reversal of 1613628043697 is 7963408263161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1151004976801 + 462623066896 = 1072849^2 + 680164^2 .

It is a cyclic number.

It is not a de Polignac number, because 1613628043697 - 2¹² = 1613628039601 is a prime.

It is not a weakly prime, because it can be changed into another prime (1613628043691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 806814021848 + 806814021849.

It is an arithmetic number, because the mean of its divisors is an integer number (806814021849).

Almost surely, 2^{1613628043697} is an apocalyptic number.

It is an amenable number.

1613628043697 is a deficient number, since it is larger than the sum of its proper divisors (1).

1613628043697 is an equidigital number, since it uses as much as digits as its factorization.

1613628043697 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7838208, while the sum is 56.

The spelling of 1613628043697 in words is "one trillion, six hundred thirteen billion, six hundred twenty-eight million, forty-three thousand, six hundred ninety-seven".