20139014448 has 200 divisors, whose sum is σ = 66750275328. Its totient is φ = 5742327168.

The previous prime is 20139014431. The next prime is 20139014513. The reversal of 20139014448 is 84441093102.

It is a happy number.

20139014448 is a `hidden beast` number, since 201 + 3 + 9 + 0 + 1 + 4 + 448 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 5105565 + ... + 5109507.

Almost surely, 2^20139014448 is an apocalyptic number.

20139014448 is a gapful number since it is divisible by the number (28) 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 20139014448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33375137664).

20139014448 is an abundant number, since it is smaller than the sum of its proper divisors (46611260880).

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

20139014448 is a wasteful number, since it uses less digits than its factorization.

20139014448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4533 (or 4518 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The spelling of 20139014448 in words is "twenty billion, one hundred thirty-nine million, fourteen thousand, four hundred forty-eight".