63436887749 has 8 divisors (see below), whose sum is σ = 63486844512. Its totient is φ = 63386956080.

The previous prime is 63436887707. The next prime is 63436887763. The reversal of 63436887749 is 94778863436.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 63436887749 - 2¹⁶ = 63436822213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63436887779) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10707302 + ... + 10713224.

It is an arithmetic number, because the mean of its divisors is an integer number (7935855564).

Almost surely, 2^63436887749 is an apocalyptic number.

It is an amenable number.

63436887749 is a deficient number, since it is larger than the sum of its proper divisors (49956763).

63436887749 is a wasteful number, since it uses less digits than its factorization.

63436887749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12547.

The product of its digits is 146313216, while the sum is 65.

The spelling of 63436887749 in words is "sixty-three billion, four hundred thirty-six million, eight hundred eighty-seven thousand, seven hundred forty-nine".