40340231402161 has 2 divisors, whose sum is σ = 40340231402162. Its totient is φ = 40340231402160.

The previous prime is 40340231402113. The next prime is 40340231402183. The reversal of 40340231402161 is 16120413204304.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37971538031025 + 2368693371136 = 6162105^2 + 1539056^2 .

It is a cyclic number.

It is not a de Polignac number, because 40340231402161 - 2²¹ = 40340229305009 is a prime.

It is not a weakly prime, because it can be changed into another prime (40340231405161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20170115701080 + 20170115701081.

It is an arithmetic number, because the mean of its divisors is an integer number (20170115701081).

Almost surely, 2^{40340231402161} is an apocalyptic number.

It is an amenable number.

40340231402161 is a deficient number, since it is larger than the sum of its proper divisors (1).

40340231402161 is an equidigital number, since it uses as much as digits as its factorization.

40340231402161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 31.

Adding to 40340231402161 its reverse (16120413204304), we get a palindrome (56460644606465).

The spelling of 40340231402161 in words is "forty trillion, three hundred forty billion, two hundred thirty-one million, four hundred two thousand, one hundred sixty-one".