20624381448 has 32 divisors (see below), whose sum is σ = 56248313760. Its totient is φ = 6249812480.

The previous prime is 20624381417. The next prime is 20624381473. The reversal of 20624381448 is 84418342602.

It is a happy number.

It is a super-2 number, since 2×20624381448² (a number of 21 digits) contains 22 as substring.

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, 39061065 + ... + 39061592.

It is an arithmetic number, because the mean of its divisors is an integer number (1757759805).

Almost surely, 2^20624381448 is an apocalyptic number.

It is an amenable number.

20624381448 is an abundant number, since it is smaller than the sum of its proper divisors (35623932312).

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

20624381448 is a wasteful number, since it uses less digits than its factorization.

20624381448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78122677 (or 78122673 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 42.

The spelling of 20624381448 in words is "twenty billion, six hundred twenty-four million, three hundred eighty-one thousand, four hundred forty-eight".