20463669760 has 80 divisors (see below), whose sum is σ = 51951123576. Its totient is φ = 7703953408.

The previous prime is 20463669719. The next prime is 20463669791. The reversal of 20463669760 is 6796636402.

It can be written as a sum of positive squares in 4 ways, for example, as 19586562304 + 877107456 = 139952^2 + 29616^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191587 + ... + 278626.

Almost surely, 2^20463669760 is an apocalyptic number.

20463669760 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20463669760 is an abundant number, since it is smaller than the sum of its proper divisors (31487453816).

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

20463669760 is an equidigital number, since it uses as much as digits as its factorization.

20463669760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470253 (or 470237 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 49.

The spelling of 20463669760 in words is "twenty billion, four hundred sixty-three million, six hundred sixty-nine thousand, seven hundred sixty".