2301644366261 has 2 divisors, whose sum is σ = 2301644366262. Its totient is φ = 2301644366260.

The previous prime is 2301644366221. The next prime is 2301644366299. The reversal of 2301644366261 is 1626634461032.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2165165102500 + 136479263761 = 1471450^2 + 369431^2 .

It is a cyclic number.

It is not a de Polignac number, because 2301644366261 - 2³⁸ = 2026766459317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2301644366221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1150822183130 + 1150822183131.

It is an arithmetic number, because the mean of its divisors is an integer number (1150822183131).

Almost surely, 2^{2301644366261} is an apocalyptic number.

It is an amenable number.

2301644366261 is a deficient number, since it is larger than the sum of its proper divisors (1).

2301644366261 is an equidigital number, since it uses as much as digits as its factorization.

2301644366261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 746496, while the sum is 44.

The spelling of 2301644366261 in words is "two trillion, three hundred one billion, six hundred forty-four million, three hundred sixty-six thousand, two hundred sixty-one".