63493416409 has 2 divisors, whose sum is σ = 63493416410. Its totient is φ = 63493416408.

The previous prime is 63493416401. The next prime is 63493416431. The reversal of 63493416409 is 90461439436.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62900640000 + 592776409 = 250800^2 + 24347^2 .

It is a cyclic number.

It is not a de Polignac number, because 63493416409 - 2³ = 63493416401 is a prime.

It is not a weakly prime, because it can be changed into another prime (63493416401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31746708204 + 31746708205.

It is an arithmetic number, because the mean of its divisors is an integer number (31746708205).

Almost surely, 2^63493416409 is an apocalyptic number.

It is an amenable number.

63493416409 is a deficient number, since it is larger than the sum of its proper divisors (1).

63493416409 is an equidigital number, since it uses as much as digits as its factorization.

63493416409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1679616, while the sum is 49.

The spelling of 63493416409 in words is "sixty-three billion, four hundred ninety-three million, four hundred sixteen thousand, four hundred nine".