20145356641337 has 4 divisors (see below), whose sum is σ = 20150060207760. Its totient is φ = 20140653074916.

The previous prime is 20145356641229. The next prime is 20145356641379. The reversal of 20145356641337 is 73314665354102.

It is a happy number.

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 20145356641337 - 2³⁰ = 20144282899513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20145356641637) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2351776787 + ... + 2351785352.

It is an arithmetic number, because the mean of its divisors is an integer number (5037515051940).

Almost surely, 2^{20145356641337} is an apocalyptic number.

It is an amenable number.

20145356641337 is a deficient number, since it is larger than the sum of its proper divisors (4703566423).

20145356641337 is an equidigital number, since it uses as much as digits as its factorization.

20145356641337 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4703566422.

The product of its (nonzero) digits is 5443200, while the sum is 50.

The spelling of 20145356641337 in words is "twenty trillion, one hundred forty-five billion, three hundred fifty-six million, six hundred forty-one thousand, three hundred thirty-seven".