20540014144 has 56 divisors (see below), whose sum is σ = 46204672640. Its totient is φ = 8981051904.

The previous prime is 20540014109. The next prime is 20540014153. The reversal of 20540014144 is 44141004502.

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, 633864 + ... + 665479.

It is an arithmetic number, because the mean of its divisors is an integer number (825083440).

Almost surely, 2^20540014144 is an apocalyptic number.

It is an amenable number.

20540014144 is an abundant number, since it is smaller than the sum of its proper divisors (25664658496).

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

20540014144 is a wasteful number, since it uses less digits than its factorization.

20540014144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1299387 (or 1299377 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

Adding to 20540014144 its reverse (44141004502), we get a palindrome (64681018646).

The spelling of 20540014144 in words is "twenty billion, five hundred forty million, fourteen thousand, one hundred forty-four".