21054162141413 has 2 divisors, whose sum is σ = 21054162141414. Its totient is φ = 21054162141412.

The previous prime is 21054162141409. The next prime is 21054162141443. The reversal of 21054162141413 is 31414126145012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14786539736929 + 6267622404484 = 3845327^2 + 2503522^2 .

It is a cyclic number.

It is not a de Polignac number, because 21054162141413 - 2² = 21054162141409 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21054162141443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10527081070706 + 10527081070707.

It is an arithmetic number, because the mean of its divisors is an integer number (10527081070707).

Almost surely, 2^{21054162141413} is an apocalyptic number.

It is an amenable number.

21054162141413 is a deficient number, since it is larger than the sum of its proper divisors (1).

21054162141413 is an equidigital number, since it uses as much as digits as its factorization.

21054162141413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23040, while the sum is 35.

Adding to 21054162141413 its reverse (31414126145012), we get a palindrome (52468288286425).

The spelling of 21054162141413 in words is "twenty-one trillion, fifty-four billion, one hundred sixty-two million, one hundred forty-one thousand, four hundred thirteen".