63145341820 has 96 divisors (see below), whose sum is σ = 153693650880. Its totient is φ = 21570877440.

The previous prime is 63145341793. The next prime is 63145341821. The reversal of 63145341820 is 2814354136.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a self number, because there is not a number n which added to its sum of digits gives 63145341820.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63145341821) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 102312 + ... + 369808.

It is an arithmetic number, because the mean of its divisors is an integer number (1600975530).

Almost surely, 2^63145341820 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63145341820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76846825440).

63145341820 is an abundant number, since it is smaller than the sum of its proper divisors (90548309060).

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

63145341820 is a wasteful number, since it uses less digits than its factorization.

63145341820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267583 (or 267581 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 37.

Adding to 63145341820 its reverse (2814354136), we get a palindrome (65959695956).

The spelling of 63145341820 in words is "sixty-three billion, one hundred forty-five million, three hundred forty-one thousand, eight hundred twenty".