20354143435420 has 24 divisors (see below), whose sum is σ = 42787903634784. Its totient is φ = 8133237865536.

The previous prime is 20354143435411. The next prime is 20354143435447. The reversal of 20354143435420 is 2453434145302.

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, 526199467 + ... + 526238146.

It is an arithmetic number, because the mean of its divisors is an integer number (1782829318116).

Almost surely, 2^{20354143435420} is an apocalyptic number.

20354143435420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20354143435420 is an abundant number, since it is smaller than the sum of its proper divisors (22433760199364).

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

20354143435420 is a wasteful number, since it uses less digits than its factorization.

20354143435420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1052438589 (or 1052438587 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 40.

The spelling of 20354143435420 in words is "twenty trillion, three hundred fifty-four billion, one hundred forty-three million, four hundred thirty-five thousand, four hundred twenty".