20437614544 has 20 divisors (see below), whose sum is σ = 39751963524. Its totient is φ = 10179043328.

The previous prime is 20437614511. The next prime is 20437614563. The reversal of 20437614544 is 44541673402.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 14242035600 + 6195578944 = 119340^2 + 78712^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20437614497 and 20437614506.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2481007 + ... + 2489230.

Almost surely, 2^20437614544 is an apocalyptic number.

It is an amenable number.

20437614544 is a deficient number, since it is larger than the sum of its proper divisors (19314348980).

20437614544 is a wasteful number, since it uses less digits than its factorization.

20437614544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4970502 (or 4970496 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 40.

The spelling of 20437614544 in words is "twenty billion, four hundred thirty-seven million, six hundred fourteen thousand, five hundred forty-four".