20136537335331 has 12 divisors (see below), whose sum is σ = 29088434489920. Its totient is φ = 13423285144080.

The previous prime is 20136537335311. The next prime is 20136537335357. The reversal of 20136537335331 is 13353373563102.

20136537335331 is a `hidden beast` number, since 2 + 0 + 1 + 3 + 6 + 537 + 33 + 53 + 31 = 666.

It is not a de Polignac number, because 20136537335331 - 2³⁴ = 20119357466147 is a prime.

It is a super-2 number, since 2×20136537335331² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20136537335311) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 89304436 + ... + 89529633.

Almost surely, 2^{20136537335331} is an apocalyptic number.

20136537335331 is a deficient number, since it is larger than the sum of its proper divisors (8951897154589).

20136537335331 is a wasteful number, since it uses less digits than its factorization.

20136537335331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178846586 (or 178846583 counting only the distinct ones).

The product of its (nonzero) digits is 1530900, while the sum is 45.

The spelling of 20136537335331 in words is "twenty trillion, one hundred thirty-six billion, five hundred thirty-seven million, three hundred thirty-five thousand, three hundred thirty-one".