63485858436 has 216 divisors, whose sum is σ = 203981057280. Its totient is φ = 15221162880.

The previous prime is 63485858431. The next prime is 63485858479.

63485858436 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 63485858436.

It is not an unprimeable number, because it can be changed into a prime (63485858431) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 890605 + ... + 959243.

Almost surely, 2^63485858436 is an apocalyptic number.

63485858436 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63485858436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101990528640).

63485858436 is an abundant number, since it is smaller than the sum of its proper divisors (140495198844).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63485858436 is a wasteful number, since it uses less digits than its factorization.

63485858436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68695 (or 68675 counting only the distinct ones).

The product of its digits is 66355200, while the sum is 60.

The spelling of 63485858436 in words is "sixty-three billion, four hundred eighty-five million, eight hundred fifty-eight thousand, four hundred thirty-six".