11946390400577 has 2 divisors, whose sum is σ = 11946390400578. Its totient is φ = 11946390400576.

The previous prime is 11946390400493. The next prime is 11946390400613. The reversal of 11946390400577 is 77500409364911.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11119883953201 + 826506447376 = 3334649^2 + 909124^2 .

It is a cyclic number.

It is not a de Polignac number, because 11946390400577 - 2²⁸ = 11946121965121 is a prime.

It is not a weakly prime, because it can be changed into another prime (11946390420577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5973195200288 + 5973195200289.

It is an arithmetic number, because the mean of its divisors is an integer number (5973195200289).

Almost surely, 2^{11946390400577} is an apocalyptic number.

It is an amenable number.

11946390400577 is a deficient number, since it is larger than the sum of its proper divisors (1).

11946390400577 is an equidigital number, since it uses as much as digits as its factorization.

11946390400577 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5715360, while the sum is 56.

The spelling of 11946390400577 in words is "eleven trillion, nine hundred forty-six billion, three hundred ninety million, four hundred thousand, five hundred seventy-seven".