20479896317529 has 32 divisors (see below), whose sum is σ = 33099075187200. Its totient is φ = 12411963553680.

The previous prime is 20479896317509. The next prime is 20479896317557. The reversal of 20479896317529 is 92571369897402.

20479896317529 is a `hidden beast` number, since 2 + 0 + 4 + 7 + 9 + 8 + 96 + 3 + 1 + 7 + 529 = 666.

It is not a de Polignac number, because 20479896317529 - 2⁷ = 20479896317401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20479896317509) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 72006202 + ... + 72290060.

It is an arithmetic number, because the mean of its divisors is an integer number (1034346099600).

It is a 1-persistent number, because it is pandigital, but 2⋅20479896317529 = 40959792635058 is not.

Almost surely, 2^{20479896317529} is an apocalyptic number.

It is an amenable number.

20479896317529 is a deficient number, since it is larger than the sum of its proper divisors (12619178869671).

20479896317529 is a wasteful number, since it uses less digits than its factorization.

20479896317529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526802 (or 526796 counting only the distinct ones).

The product of its (nonzero) digits is 411505920, while the sum is 72.

The spelling of 20479896317529 in words is "twenty trillion, four hundred seventy-nine billion, eight hundred ninety-six million, three hundred seventeen thousand, five hundred twenty-nine".