20136543155031 has 24 divisors (see below), whose sum is σ = 26944124289264. Its totient is φ = 13376813528320.

The previous prime is 20136543155009. The next prime is 20136543155089. The reversal of 20136543155031 is 13055134563102.

It is not a de Polignac number, because 20136543155031 - 2⁶ = 20136543154967 is a prime.

It is a super-2 number, since 2×20136543155031² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20136543155731) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 463986025 + ... + 464029421.

It is an arithmetic number, because the mean of its divisors is an integer number (1122671845386).

Almost surely, 2^{20136543155031} is an apocalyptic number.

20136543155031 is a deficient number, since it is larger than the sum of its proper divisors (6807581134233).

20136543155031 is an frugal number, since it uses more digits than its factorization.

20136543155031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45119 (or 44700 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 39.

The spelling of 20136543155031 in words is "twenty trillion, one hundred thirty-six billion, five hundred forty-three million, one hundred fifty-five thousand, thirty-one".