20545455044 has 12 divisors (see below), whose sum is σ = 35955748668. Its totient is φ = 10272384000.

The previous prime is 20545455013. The next prime is 20545455071. The reversal of 20545455044 is 44055454502.

It can be written as a sum of positive squares in 2 ways, for example, as 9729455044 + 10816000000 = 98638^2 + 104000^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20545454989 and 20545455007.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87644 + ... + 220844.

It is an arithmetic number, because the mean of its divisors is an integer number (2996312389).

Almost surely, 2^20545455044 is an apocalyptic number.

It is an amenable number.

20545455044 is a deficient number, since it is larger than the sum of its proper divisors (15410293624).

20545455044 is a wasteful number, since it uses less digits than its factorization.

20545455044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171766 (or 171764 counting only the distinct ones).

The product of its (nonzero) digits is 320000, while the sum is 38.

The spelling of 20545455044 in words is "twenty billion, five hundred forty-five million, four hundred fifty-five thousand, forty-four".