1406130261661 has 2 divisors, whose sum is σ = 1406130261662. Its totient is φ = 1406130261660.

The previous prime is 1406130261643. The next prime is 1406130261673. The reversal of 1406130261661 is 1661620316041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1305454779225 + 100675482436 = 1142565^2 + 317294^2 .

It is a cyclic number.

It is not a de Polignac number, because 1406130261661 - 2¹³ = 1406130253469 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1406130261661.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1406130261631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 703065130830 + 703065130831.

It is an arithmetic number, because the mean of its divisors is an integer number (703065130831).

Almost surely, 2^{1406130261661} is an apocalyptic number.

It is an amenable number.

1406130261661 is a deficient number, since it is larger than the sum of its proper divisors (1).

1406130261661 is an equidigital number, since it uses as much as digits as its factorization.

1406130261661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 37.

The spelling of 1406130261661 in words is "one trillion, four hundred six billion, one hundred thirty million, two hundred sixty-one thousand, six hundred sixty-one".