20134100440 has 32 divisors (see below), whose sum is σ = 45702636480. Its totient is φ = 7982367232.

The previous prime is 20134100431. The next prime is 20134100453. The reversal of 20134100440 is 4400143102.

It is a congruent number.

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, 2222704 + ... + 2231743.

It is an arithmetic number, because the mean of its divisors is an integer number (1428207390).

Almost surely, 2^20134100440 is an apocalyptic number.

20134100440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20134100440 is an abundant number, since it is smaller than the sum of its proper divisors (25568536040).

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

20134100440 is a wasteful number, since it uses less digits than its factorization.

20134100440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4454571 (or 4454567 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 20134100440 its reverse (4400143102), we get a palindrome (24534243542).

The spelling of 20134100440 in words is "twenty billion, one hundred thirty-four million, one hundred thousand, four hundred forty".