64454526413 has 2 divisors, whose sum is σ = 64454526414. Its totient is φ = 64454526412.

The previous prime is 64454526377. The next prime is 64454526457. The reversal of 64454526413 is 31462545446.

It is an a-pointer prime, because the next prime (64454526457) can be obtained adding 64454526413 to its sum of digits (44).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59230417129 + 5224109284 = 243373^2 + 72278^2 .

It is a cyclic number.

It is not a de Polignac number, because 64454526413 - 2²² = 64450332109 is a prime.

It is a super-2 number, since 2×64454526413² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64454526013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32227263206 + 32227263207.

It is an arithmetic number, because the mean of its divisors is an integer number (32227263207).

Almost surely, 2^64454526413 is an apocalyptic number.

It is an amenable number.

64454526413 is a deficient number, since it is larger than the sum of its proper divisors (1).

64454526413 is an equidigital number, since it uses as much as digits as its factorization.

64454526413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1382400, while the sum is 44.

The spelling of 64454526413 in words is "sixty-four billion, four hundred fifty-four million, five hundred twenty-six thousand, four hundred thirteen".