63145286920 has 16 divisors (see below), whose sum is σ = 142076895660. Its totient is φ = 25258114752.

The previous prime is 63145286917. The next prime is 63145286929. The reversal of 63145286920 is 2968254136.

It can be written as a sum of positive squares in 2 ways, for example, as 53702500644 + 9442786276 = 231738^2 + 97174^2 .

It is not an unprimeable number, because it can be changed into a prime (63145286929) 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, 789316047 + ... + 789316126.

Almost surely, 2^63145286920 is an apocalyptic number.

It is an amenable number.

63145286920 is an abundant number, since it is smaller than the sum of its proper divisors (78931608740).

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

63145286920 is a wasteful number, since it uses less digits than its factorization.

63145286920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1578632184 (or 1578632180 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 46.

The spelling of 63145286920 in words is "sixty-three billion, one hundred forty-five million, two hundred eighty-six thousand, nine hundred twenty".