20151176466481 has 2 divisors, whose sum is σ = 20151176466482. Its totient is φ = 20151176466480.

The previous prime is 20151176466433. The next prime is 20151176466599. The reversal of 20151176466481 is 18466467115102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13980001352256 + 6171175114225 = 3738984^2 + 2484185^2 .

It is a cyclic number.

It is not a de Polignac number, because 20151176466481 - 2⁷ = 20151176466353 is a prime.

It is a super-2 number, since 2×20151176466481² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20151173466481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10075588233240 + 10075588233241.

It is an arithmetic number, because the mean of its divisors is an integer number (10075588233241).

Almost surely, 2^{20151176466481} is an apocalyptic number.

It is an amenable number.

20151176466481 is a deficient number, since it is larger than the sum of its proper divisors (1).

20151176466481 is an equidigital number, since it uses as much as digits as its factorization.

20151176466481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1935360, while the sum is 52.

The spelling of 20151176466481 in words is "twenty trillion, one hundred fifty-one billion, one hundred seventy-six million, four hundred sixty-six thousand, four hundred eighty-one".