20534486343919 has 4 divisors (see below), whose sum is σ = 21742397305344. Its totient is φ = 19326575382496.

The previous prime is 20534486343901. The next prime is 20534486343929. The reversal of 20534486343919 is 91934368443502.

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 20534486343919 - 2⁵ = 20534486343887 is a prime.

It is a super-2 number, since 2×20534486343919² (a number of 27 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 (20534486343929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 603955480687 + ... + 603955480720.

It is an arithmetic number, because the mean of its divisors is an integer number (5435599326336).

Almost surely, 2^{20534486343919} is an apocalyptic number.

20534486343919 is a deficient number, since it is larger than the sum of its proper divisors (1207910961425).

20534486343919 is a wasteful number, since it uses less digits than its factorization.

20534486343919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1207910961424.

The product of its (nonzero) digits is 67184640, while the sum is 61.

The spelling of 20534486343919 in words is "twenty trillion, five hundred thirty-four billion, four hundred eighty-six million, three hundred forty-three thousand, nine hundred nineteen".