20354740565451 has 16 divisors (see below), whose sum is σ = 28361718813696. Its totient is φ = 12960548004096.

The previous prime is 20354740565413. The next prime is 20354740565473. The reversal of 20354740565451 is 15456504745302.

It is not a de Polignac number, because 20354740565451 - 2¹⁰ = 20354740564427 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20354740565394 and 20354740565403.

It is not an unprimeable number, because it can be changed into a prime (20354740565351) 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, 219118675 + ... + 219211548.

It is an arithmetic number, because the mean of its divisors is an integer number (1772607425856).

Almost surely, 2^{20354740565451} is an apocalyptic number.

20354740565451 is a deficient number, since it is larger than the sum of its proper divisors (8006978248245).

20354740565451 is a wasteful number, since it uses less digits than its factorization.

20354740565451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438330922.

The product of its (nonzero) digits is 10080000, while the sum is 51.

The spelling of 20354740565451 in words is "twenty trillion, three hundred fifty-four billion, seven hundred forty million, five hundred sixty-five thousand, four hundred fifty-one".