20140540450 has 48 divisors (see below), whose sum is σ = 38290942080. Its totient is φ = 7879734720.

The previous prime is 20140540421. The next prime is 20140540489. The reversal of 20140540450 is 5404504102.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 398824 + ... + 446476.

It is an arithmetic number, because the mean of its divisors is an integer number (797727960).

Almost surely, 2^20140540450 is an apocalyptic number.

20140540450 is a deficient number, since it is larger than the sum of its proper divisors (18150401630).

20140540450 is a wasteful number, since it uses less digits than its factorization.

20140540450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47851 (or 47846 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

The spelling of 20140540450 in words is "twenty billion, one hundred forty million, five hundred forty thousand, four hundred fifty".