20906624480 has 96 divisors (see below), whose sum is σ = 59768404416. Its totient is φ = 6746333184.

The previous prime is 20906624461. The next prime is 20906624491. The reversal of 20906624480 is 8442660902.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 529979 + ... + 568058.

It is an arithmetic number, because the mean of its divisors is an integer number (622587546).

Almost surely, 2^20906624480 is an apocalyptic number.

20906624480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20906624480 is an abundant number, since it is smaller than the sum of its proper divisors (38861779936).

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

20906624480 is a wasteful number, since it uses less digits than its factorization.

20906624480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1098076 (or 1098068 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 41.

The spelling of 20906624480 in words is "twenty billion, nine hundred six million, six hundred twenty-four thousand, four hundred eighty".