64441433414551 has 2 divisors, whose sum is σ = 64441433414552. Its totient is φ = 64441433414550.

The previous prime is 64441433414411. The next prime is 64441433414557. The reversal of 64441433414551 is 15541433414446.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64441433414551 - 2⁴⁵ = 29257061325719 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64441433414495 and 64441433414504.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64441433414557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32220716707275 + 32220716707276.

It is an arithmetic number, because the mean of its divisors is an integer number (32220716707276).

Almost surely, 2^{64441433414551} is an apocalyptic number.

64441433414551 is a deficient number, since it is larger than the sum of its proper divisors (1).

64441433414551 is an equidigital number, since it uses as much as digits as its factorization.

64441433414551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5529600, while the sum is 49.

Adding to 64441433414551 its reverse (15541433414446), we get a palindrome (79982866828997).

The spelling of 64441433414551 in words is "sixty-four trillion, four hundred forty-one billion, four hundred thirty-three million, four hundred fourteen thousand, five hundred fifty-one".