20354665523435 has 16 divisors (see below), whose sum is σ = 24904480034880. Its totient is φ = 15964923112320.

The previous prime is 20354665523383. The next prime is 20354665523447. The reversal of 20354665523435 is 53432556645302.

It is a happy number.

It is not a de Polignac number, because 20354665523435 - 2¹⁴ = 20354665507051 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (53).

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, 27443615 + ... + 28175544.

It is an arithmetic number, because the mean of its divisors is an integer number (1556530002180).

Almost surely, 2^{20354665523435} is an apocalyptic number.

20354665523435 is a deficient number, since it is larger than the sum of its proper divisors (4549814511445).

20354665523435 is a wasteful number, since it uses less digits than its factorization.

20354665523435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55620598.

The product of its (nonzero) digits is 38880000, while the sum is 53.

The spelling of 20354665523435 in words is "twenty trillion, three hundred fifty-four billion, six hundred sixty-five million, five hundred twenty-three thousand, four hundred thirty-five".