11946390400837 has 2 divisors, whose sum is σ = 11946390400838. Its totient is φ = 11946390400836.

The previous prime is 11946390400781. The next prime is 11946390400993. The reversal of 11946390400837 is 73800409364911.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10696569254721 + 1249821146116 = 3270561^2 + 1117954^2 .

It is an emirp because it is prime and its reverse (73800409364911) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11946390400837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11946390400237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5973195200418 + 5973195200419.

It is an arithmetic number, because the mean of its divisors is an integer number (5973195200419).

Almost surely, 2^{11946390400837} is an apocalyptic number.

It is an amenable number.

11946390400837 is a deficient number, since it is larger than the sum of its proper divisors (1).

11946390400837 is an equidigital number, since it uses as much as digits as its factorization.

11946390400837 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3919104, while the sum is 55.

The spelling of 11946390400837 in words is "eleven trillion, nine hundred forty-six billion, three hundred ninety million, four hundred thousand, eight hundred thirty-seven".