2662400261 has 2 divisors, whose sum is σ = 2662400262. Its totient is φ = 2662400260.

The previous prime is 2662400219. The next prime is 2662400297. The reversal of 2662400261 is 1620042662.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1756029025 + 906371236 = 41905^2 + 30106^2 .

It is a cyclic number.

It is not a de Polignac number, because 2662400261 - 2²⁶ = 2595291397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2662402261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1331200130 + 1331200131.

It is an arithmetic number, because the mean of its divisors is an integer number (1331200131).

Almost surely, 2^2662400261 is an apocalyptic number.

It is an amenable number.

2662400261 is a deficient number, since it is larger than the sum of its proper divisors (1).

2662400261 is an equidigital number, since it uses as much as digits as its factorization.

2662400261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 2662400261 is about 51598.4521182564. The cubic root of 2662400261 is about 1385.9826138356.

The spelling of 2662400261 in words is "two billion, six hundred sixty-two million, four hundred thousand, two hundred sixty-one".