20136537034040 has 64 divisors (see below), whose sum is σ = 51780573250560. Its totient is φ = 6903834675840.

The previous prime is 20136537034039. The next prime is 20136537034067. The reversal of 20136537034040 is 4043073563102.

It is a junction number, because it is equal to n+sod(n) for n = 20136537033985 and 20136537034003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16192289 + ... + 17391471.

It is an arithmetic number, because the mean of its divisors is an integer number (809071457040).

Almost surely, 2^{20136537034040} is an apocalyptic number.

20136537034040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20136537034040 is an abundant number, since it is smaller than the sum of its proper divisors (31644036216520).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20136537034040 is a wasteful number, since it uses less digits than its factorization.

20136537034040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1259172 (or 1259168 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 38.

The spelling of 20136537034040 in words is "twenty trillion, one hundred thirty-six billion, five hundred thirty-seven million, thirty-four thousand, forty".