10401204194861 has 2 divisors, whose sum is σ = 10401204194862. Its totient is φ = 10401204194860.

The previous prime is 10401204194827. The next prime is 10401204194863. The reversal of 10401204194861 is 16849140210401.

10401204194861 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10358549140900 + 42655053961 = 3218470^2 + 206531^2 .

It is a cyclic number.

It is not a de Polignac number, because 10401204194861 - 2³⁴ = 10384024325677 is a prime.

Together with 10401204194863, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10401204194863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5200602097430 + 5200602097431.

It is an arithmetic number, because the mean of its divisors is an integer number (5200602097431).

Almost surely, 2^{10401204194861} is an apocalyptic number.

It is an amenable number.

10401204194861 is a deficient number, since it is larger than the sum of its proper divisors (1).

10401204194861 is an equidigital number, since it uses as much as digits as its factorization.

10401204194861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 55296, while the sum is 41.

The spelling of 10401204194861 in words is "ten trillion, four hundred one billion, two hundred four million, one hundred ninety-four thousand, eight hundred sixty-one".