20450141136 has 60 divisors (see below), whose sum is σ = 57247141380. Its totient is φ = 6814909440.

The previous prime is 20450141053. The next prime is 20450141167. The reversal of 20450141136 is 63114105402.

It is a happy number.

20450141136 is a `hidden beast` number, since 20 + 4 + 501 + 4 + 1 + 136 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 17624155536 + 2825985600 = 132756^2 + 53160^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 596920 + ... + 630248.

It is an arithmetic number, because the mean of its divisors is an integer number (954119023).

Almost surely, 2^20450141136 is an apocalyptic number.

It is an amenable number.

20450141136 is an abundant number, since it is smaller than the sum of its proper divisors (36797000244).

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

20450141136 is a wasteful number, since it uses less digits than its factorization.

20450141136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37604 (or 37595 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

Adding to 20450141136 its product of nonzero digits (2880), we get a square (20450144016 = 143004²).

Adding to 20450141136 its reverse (63114105402), we get a palindrome (83564246538).

The spelling of 20450141136 in words is "twenty billion, four hundred fifty million, one hundred forty-one thousand, one hundred thirty-six".