20135635165240 has 64 divisors (see below), whose sum is σ = 52048433295360. Its totient is φ = 6867501578880.

The previous prime is 20135635165211. The next prime is 20135635165241. The reversal of 20135635165240 is 4256153653102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20135635165241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 188200402 + ... + 188307361.

It is an arithmetic number, because the mean of its divisors is an integer number (813256770240).

Almost surely, 2^{20135635165240} is an apocalyptic number.

20135635165240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20135635165240 is an abundant number, since it is smaller than the sum of its proper divisors (31912798130120).

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

20135635165240 is a wasteful number, since it uses less digits than its factorization.

20135635165240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376507972 (or 376507968 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 43.

The spelling of 20135635165240 in words is "twenty trillion, one hundred thirty-five billion, six hundred thirty-five million, one hundred sixty-five thousand, two hundred forty".