20554423311535 has 8 divisors (see below), whose sum is σ = 24666560328816. Its totient is φ = 16442703745920.

The previous prime is 20554423311509. The next prime is 20554423311593. The reversal of 20554423311535 is 53511332445502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20554423311535 - 2¹⁷ = 20554423180463 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20554423311491 and 20554423311500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104254581 + ... + 104451550.

It is an arithmetic number, because the mean of its divisors is an integer number (3083320041102).

Almost surely, 2^{20554423311535} is an apocalyptic number.

20554423311535 is a deficient number, since it is larger than the sum of its proper divisors (4112137017281).

20554423311535 is a wasteful number, since it uses less digits than its factorization.

20554423311535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208725833.

The product of its (nonzero) digits is 1080000, while the sum is 43.

The spelling of 20554423311535 in words is "twenty trillion, five hundred fifty-four billion, four hundred twenty-three million, three hundred eleven thousand, five hundred thirty-five".