20340554719 has 4 divisors (see below), whose sum is σ = 20346980544. Its totient is φ = 20334128896.

The previous prime is 20340554713. The next prime is 20340554749. The reversal of 20340554719 is 91745504302.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20340554719 - 2¹¹ = 20340552671 is a prime.

It is a super-2 number, since 2×20340554719² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20340554713) 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, 3208162 + ... + 3214495.

It is an arithmetic number, because the mean of its divisors is an integer number (5086745136).

Almost surely, 2^20340554719 is an apocalyptic number.

20340554719 is a deficient number, since it is larger than the sum of its proper divisors (6425825).

20340554719 is an equidigital number, since it uses as much as digits as its factorization.

20340554719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6425824.

The product of its (nonzero) digits is 151200, while the sum is 40.

The spelling of 20340554719 in words is "twenty billion, three hundred forty million, five hundred fifty-four thousand, seven hundred nineteen".