20630544480 has 1440 divisors, whose sum is σ = 97119588384. Its totient is φ = 4096770048.

The previous prime is 20630544469. The next prime is 20630544511. The reversal of 20630544480 is 8444503602.

20630544480 is a `hidden beast` number, since 2 + 0 + 6 + 30 + 544 + 4 + 80 = 666.

It is a tau number, because it is divible by the number of its divisors (1440).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 1213561432 + ... + 1213561448.

Almost surely, 2^20630544480 is an apocalyptic number.

20630544480 is a gapful number since it is divisible by the number (20) 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 20630544480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48559794192).

20630544480 is an abundant number, since it is smaller than the sum of its proper divisors (76489043904).

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

20630544480 is an equidigital number, since it uses as much as digits as its factorization.

20630544480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88 (or 47 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 36.

The spelling of 20630544480 in words is "twenty billion, six hundred thirty million, five hundred forty-four thousand, four hundred eighty".