20004304703437 has 4 divisors (see below), whose sum is σ = 20005892233276. Its totient is φ = 20002717173600.

The previous prime is 20004304703389. The next prime is 20004304703459. The reversal of 20004304703437 is 73430740340002.

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

It can be written as a sum of positive squares in 2 ways, for example, as 8305756844841 + 11698547858596 = 2881971^2 + 3420314^2 .

It is a cyclic number.

It is not a de Polignac number, because 20004304703437 - 2¹⁹ = 20004304179149 is a prime.

It is a super-2 number, since 2×20004304703437² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20004304703396 and 20004304703405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20004304733437) 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, 793746018 + ... + 793771219.

It is an arithmetic number, because the mean of its divisors is an integer number (5001473058319).

Almost surely, 2^{20004304703437} is an apocalyptic number.

It is an amenable number.

20004304703437 is a deficient number, since it is larger than the sum of its proper divisors (1587529839).

20004304703437 is a wasteful number, since it uses less digits than its factorization.

20004304703437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1587529838.

The product of its (nonzero) digits is 169344, while the sum is 37.

The spelling of 20004304703437 in words is "twenty trillion, four billion, three hundred four million, seven hundred three thousand, four hundred thirty-seven".