64603412513 has 2 divisors, whose sum is σ = 64603412514. Its totient is φ = 64603412512.

The previous prime is 64603412473. The next prime is 64603412539. The reversal of 64603412513 is 31521430646.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54310904209 + 10292508304 = 233047^2 + 101452^2 .

It is a cyclic number.

It is not a de Polignac number, because 64603412513 - 2¹² = 64603408417 is a prime.

It is not a weakly prime, because it can be changed into another prime (64603412213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32301706256 + 32301706257.

It is an arithmetic number, because the mean of its divisors is an integer number (32301706257).

Almost surely, 2^64603412513 is an apocalyptic number.

It is an amenable number.

64603412513 is a deficient number, since it is larger than the sum of its proper divisors (1).

64603412513 is an equidigital number, since it uses as much as digits as its factorization.

64603412513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 35.

The spelling of 64603412513 in words is "sixty-four billion, six hundred three million, four hundred twelve thousand, five hundred thirteen".