21514445044151 has 2 divisors, whose sum is σ = 21514445044152. Its totient is φ = 21514445044150.

The previous prime is 21514445044109. The next prime is 21514445044243. The reversal of 21514445044151 is 15144054441512.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21514445044151 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21514445044099 and 21514445044108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21514445043151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10757222522075 + 10757222522076.

It is an arithmetic number, because the mean of its divisors is an integer number (10757222522076).

Almost surely, 2^{21514445044151} is an apocalyptic number.

21514445044151 is a deficient number, since it is larger than the sum of its proper divisors (1).

21514445044151 is an equidigital number, since it uses as much as digits as its factorization.

21514445044151 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 256000, while the sum is 41.

Adding to 21514445044151 its reverse (15144054441512), we get a palindrome (36658499485663).

The spelling of 21514445044151 in words is "twenty-one trillion, five hundred fourteen billion, four hundred forty-five million, forty-four thousand, one hundred fifty-one".