20061620104 has 16 divisors (see below), whose sum is σ = 37668602700. Its totient is φ = 10016659392.

The previous prime is 20061620101. The next prime is 20061620141. The reversal of 20061620104 is 40102616002.

It can be written as a sum of positive squares in 2 ways, for example, as 17336988900 + 2724631204 = 131670^2 + 52198^2 .

It is not an unprimeable number, because it can be changed into a prime (20061620101) 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, 1762807 + ... + 1774150.

Almost surely, 2^20061620104 is an apocalyptic number.

It is an amenable number.

20061620104 is a deficient number, since it is larger than the sum of its proper divisors (17606982596).

20061620104 is a wasteful number, since it uses less digits than its factorization.

20061620104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3537672 (or 3537668 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The spelling of 20061620104 in words is "twenty billion, sixty-one million, six hundred twenty thousand, one hundred four".