10156205423081 has 2 divisors, whose sum is σ = 10156205423082. Its totient is φ = 10156205423080.

The previous prime is 10156205423047. The next prime is 10156205423173. The reversal of 10156205423081 is 18032450265101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9470753896681 + 685451526400 = 3077459^2 + 827920^2 .

It is a cyclic number.

It is not a de Polignac number, because 10156205423081 - 2²² = 10156201228777 is a prime.

It is a super-2 number, since 2×10156205423081² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10156205423381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5078102711540 + 5078102711541.

It is an arithmetic number, because the mean of its divisors is an integer number (5078102711541).

Almost surely, 2^{10156205423081} is an apocalyptic number.

It is an amenable number.

10156205423081 is a deficient number, since it is larger than the sum of its proper divisors (1).

10156205423081 is an equidigital number, since it uses as much as digits as its factorization.

10156205423081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 57600, while the sum is 38.

Adding to 10156205423081 its reverse (18032450265101), we get a palindrome (28188655688182).

The spelling of 10156205423081 in words is "ten trillion, one hundred fifty-six billion, two hundred five million, four hundred twenty-three thousand, eighty-one".