20136537335450 has 12 divisors (see below), whose sum is σ = 37453959444030. Its totient is φ = 8054614934160.

The previous prime is 20136537335449. The next prime is 20136537335501. The reversal of 20136537335450 is 5453373563102.

It can be written as a sum of positive squares in 3 ways, for example, as 7536117549601 + 12600419785849 = 2745199^2 + 3549707^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20136537335395 and 20136537335404.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 201365373305 + ... + 201365373404.

Almost surely, 2^{20136537335450} is an apocalyptic number.

20136537335450 is a deficient number, since it is larger than the sum of its proper divisors (17317422108580).

20136537335450 is a wasteful number, since it uses less digits than its factorization.

20136537335450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402730746721 (or 402730746716 counting only the distinct ones).

The product of its (nonzero) digits is 3402000, while the sum is 47.

The spelling of 20136537335450 in words is "twenty trillion, one hundred thirty-six billion, five hundred thirty-seven million, three hundred thirty-five thousand, four hundred fifty".