63403746898489 has 4 divisors (see below), whose sum is σ = 63403774028800. Its totient is φ = 63403719768180.

The previous prime is 63403746898447. The next prime is 63403746898507. The reversal of 63403746898489 is 98489864730436.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 63403746898489 - 2²¹ = 63403744801337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63403746898409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9690789 + ... + 14856610.

It is an arithmetic number, because the mean of its divisors is an integer number (15850943507200).

Almost surely, 2^{63403746898489} is an apocalyptic number.

It is an amenable number.

63403746898489 is a deficient number, since it is larger than the sum of its proper divisors (27130311).

63403746898489 is a wasteful number, since it uses less digits than its factorization.

63403746898489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27130310.

The product of its (nonzero) digits is 6019743744, while the sum is 79.

The spelling of 63403746898489 in words is "sixty-three trillion, four hundred three billion, seven hundred forty-six million, eight hundred ninety-eight thousand, four hundred eighty-nine".