20134033440 has 48 divisors (see below), whose sum is σ = 63422206848. Its totient is φ = 5369075456.

The previous prime is 20134033433. The next prime is 20134033463. The reversal of 20134033440 is 4433043102.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 20134033440.

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, 20972472 + ... + 20973431.

It is an arithmetic number, because the mean of its divisors is an integer number (1321295976).

Almost surely, 2^20134033440 is an apocalyptic number.

20134033440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20134033440 is an abundant number, since it is smaller than the sum of its proper divisors (43288173408).

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

20134033440 is a wasteful number, since it uses less digits than its factorization.

20134033440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41945921 (or 41945913 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 20134033440 its reverse (4433043102), we get a palindrome (24567076542).

The spelling of 20134033440 in words is "twenty billion, one hundred thirty-four million, thirty-three thousand, four hundred forty".