20346727124519 has 4 divisors (see below), whose sum is σ = 20366123433600. Its totient is φ = 20327330815440.

The previous prime is 20346727124501. The next prime is 20346727124539. The reversal of 20346727124519 is 91542172764302.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20346727124519 is a prime.

It is a super-2 number, since 2×20346727124519² (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 (20346727124539) 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, 9698152967 + ... + 9698155064.

It is an arithmetic number, because the mean of its divisors is an integer number (5091530858400).

Almost surely, 2^{20346727124519} is an apocalyptic number.

20346727124519 is a deficient number, since it is larger than the sum of its proper divisors (19396309081).

20346727124519 is a wasteful number, since it uses less digits than its factorization.

20346727124519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19396309080.

The product of its (nonzero) digits is 5080320, while the sum is 53.

The spelling of 20346727124519 in words is "twenty trillion, three hundred forty-six billion, seven hundred twenty-seven million, one hundred twenty-four thousand, five hundred nineteen".