20654254036 has 24 divisors (see below), whose sum is σ = 38935096200. Its totient is φ = 9530339712.

The previous prime is 20654254007. The next prime is 20654254043. The reversal of 20654254036 is 63045245602.

It can be written as a sum of positive squares in 4 ways, for example, as 933669136 + 19720584900 = 30556^2 + 140430^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20654253986 and 20654254004.

It is a congruent number.

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, 168390 + ... + 263938.

It is an arithmetic number, because the mean of its divisors is an integer number (1622295675).

Almost surely, 2^20654254036 is an apocalyptic number.

20654254036 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

20654254036 is a deficient number, since it is larger than the sum of its proper divisors (18280842164).

20654254036 is a wasteful number, since it uses less digits than its factorization.

20654254036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99723 (or 99721 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 37.

Adding to 20654254036 its reverse (63045245602), we get a palindrome (83699499638).

The spelling of 20654254036 in words is "twenty billion, six hundred fifty-four million, two hundred fifty-four thousand, thirty-six".