20041251536 has 10 divisors (see below), whose sum is σ = 38829924882. Its totient is φ = 10020625760.

The previous prime is 20041251491. The next prime is 20041251553. The reversal of 20041251536 is 63515214002.

It can be written as a sum of positive squares in only one way, i.e., 11569153600 + 8472097936 = 107560^2 + 92044^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20041251499 and 20041251508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 626289095 + ... + 626289126.

Almost surely, 2^20041251536 is an apocalyptic number.

It is an amenable number.

20041251536 is a deficient number, since it is larger than the sum of its proper divisors (18788673346).

20041251536 is a wasteful number, since it uses less digits than its factorization.

20041251536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1252578229 (or 1252578223 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 29.

Adding to 20041251536 its reverse (63515214002), we get a palindrome (83556465538).

The spelling of 20041251536 in words is "twenty billion, forty-one million, two hundred fifty-one thousand, five hundred thirty-six".