2055661613 has 2 divisors, whose sum is σ = 2055661614. Its totient is φ = 2055661612.

The previous prime is 2055661609. The next prime is 2055661667. The reversal of 2055661613 is 3161665502.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2050006729 + 5654884 = 45277^2 + 2378^2 .

It is a cyclic number.

It is not a de Polignac number, because 2055661613 - 2² = 2055661609 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2055661693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1027830806 + 1027830807.

It is an arithmetic number, because the mean of its divisors is an integer number (1027830807).

Almost surely, 2^2055661613 is an apocalyptic number.

It is an amenable number.

2055661613 is a deficient number, since it is larger than the sum of its proper divisors (1).

2055661613 is an equidigital number, since it uses as much as digits as its factorization.

2055661613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 2055661613 is about 45339.4046387907. The cubic root of 2055661613 is about 1271.5024714977.

The spelling of 2055661613 in words is "two billion, fifty-five million, six hundred sixty-one thousand, six hundred thirteen".