20356660541453 has 4 divisors (see below), whose sum is σ = 20362047330240. Its totient is φ = 20351273752668.

The previous prime is 20356660541423. The next prime is 20356660541507. The reversal of 20356660541453 is 35414506665302.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20356660541453 - 2⁶ = 20356660541389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20356660541423) by changing a digit.

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, 2693388725 + ... + 2693396282.

It is an arithmetic number, because the mean of its divisors is an integer number (5090511832560).

Almost surely, 2^{20356660541453} is an apocalyptic number.

It is an amenable number.

20356660541453 is a deficient number, since it is larger than the sum of its proper divisors (5386788787).

20356660541453 is an equidigital number, since it uses as much as digits as its factorization.

20356660541453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5386788786.

The product of its (nonzero) digits is 7776000, while the sum is 50.

The spelling of 20356660541453 in words is "twenty trillion, three hundred fifty-six billion, six hundred sixty million, five hundred forty-one thousand, four hundred fifty-three".