20355253504036 has 12 divisors (see below), whose sum is σ = 38860029416880. Its totient is φ = 9252387956360.

The previous prime is 20355253504031. The next prime is 20355253504051. The reversal of 20355253504036 is 63040535255302.

It is a junction number, because it is equal to n+sod(n) for n = 20355253503983 and 20355253504001.

It is not an unprimeable number, because it can be changed into a prime (20355253504031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 231309698866 + ... + 231309698953.

It is an arithmetic number, because the mean of its divisors is an integer number (3238335784740).

Almost surely, 2^{20355253504036} is an apocalyptic number.

It is an amenable number.

20355253504036 is a deficient number, since it is larger than the sum of its proper divisors (18504775912844).

20355253504036 is a wasteful number, since it uses less digits than its factorization.

20355253504036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462619397834 (or 462619397832 counting only the distinct ones).

The product of its (nonzero) digits is 1620000, while the sum is 43.

Adding to 20355253504036 its reverse (63040535255302), we get a palindrome (83395788759338).

The spelling of 20355253504036 in words is "twenty trillion, three hundred fifty-five billion, two hundred fifty-three million, five hundred four thousand, thirty-six".