2355661540073 has 2 divisors, whose sum is σ = 2355661540074. Its totient is φ = 2355661540072.

The previous prime is 2355661540049. The next prime is 2355661540153. The reversal of 2355661540073 is 3700451665532.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1864024975849 + 491636564224 = 1365293^2 + 701168^2 .

It is a cyclic number.

It is not a de Polignac number, because 2355661540073 - 2¹² = 2355661535977 is a prime.

It is not a weakly prime, because it can be changed into another prime (2355661540373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1177830770036 + 1177830770037.

It is an arithmetic number, because the mean of its divisors is an integer number (1177830770037).

Almost surely, 2^{2355661540073} is an apocalyptic number.

It is an amenable number.

2355661540073 is a deficient number, since it is larger than the sum of its proper divisors (1).

2355661540073 is an equidigital number, since it uses as much as digits as its factorization.

2355661540073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268000, while the sum is 47.

The spelling of 2355661540073 in words is "two trillion, three hundred fifty-five billion, six hundred sixty-one million, five hundred forty thousand, seventy-three".