20534265561436 has 12 divisors (see below), whose sum is σ = 39201779708280. Its totient is φ = 9333757073360.

The previous prime is 20534265561373. The next prime is 20534265561479. The reversal of 20534265561436 is 63416556243502.

It is a super-3 number, since 3×20534265561436³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 233343926791 + ... + 233343926878.

It is an arithmetic number, because the mean of its divisors is an integer number (3266814975690).

Almost surely, 2^{20534265561436} is an apocalyptic number.

It is an amenable number.

20534265561436 is a deficient number, since it is larger than the sum of its proper divisors (18667514146844).

20534265561436 is a wasteful number, since it uses less digits than its factorization.

20534265561436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466687853684 (or 466687853682 counting only the distinct ones).

The product of its (nonzero) digits is 15552000, while the sum is 52.

The spelling of 20534265561436 in words is "twenty trillion, five hundred thirty-four billion, two hundred sixty-five million, five hundred sixty-one thousand, four hundred thirty-six".