463661616520 has 16 divisors (see below), whose sum is σ = 1043238637260. Its totient is φ = 185464646592.

The previous prime is 463661616499. The next prime is 463661616521. The reversal of 463661616520 is 25616166364.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 452506454596 + 11155161924 = 672686^2 + 105618^2 .

It is not an unprimeable number, because it can be changed into a prime (463661616521) 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, 5795770167 + ... + 5795770246.

Almost surely, 2^463661616520 is an apocalyptic number.

463661616520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

463661616520 is an abundant number, since it is smaller than the sum of its proper divisors (579577020740).

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

463661616520 is a wasteful number, since it uses less digits than its factorization.

463661616520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11591540424 (or 11591540420 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 46.

The spelling of 463661616520 in words is "four hundred sixty-three billion, six hundred sixty-one million, six hundred sixteen thousand, five hundred twenty".