20479502837 has 8 divisors (see below), whose sum is σ = 21191500800. Its totient is φ = 19767892144.

The previous prime is 20479502821. The next prime is 20479502851. The reversal of 20479502837 is 73820597402.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20479502837 - 2⁴ = 20479502821 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20479502791 and 20479502800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20479502237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12908 + ... + 202794.

It is an arithmetic number, because the mean of its divisors is an integer number (2648937600).

Almost surely, 2^20479502837 is an apocalyptic number.

It is an amenable number.

20479502837 is a deficient number, since it is larger than the sum of its proper divisors (711997963).

20479502837 is a wasteful number, since it uses less digits than its factorization.

20479502837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193635.

The product of its (nonzero) digits is 846720, while the sum is 47.

The spelling of 20479502837 in words is "twenty billion, four hundred seventy-nine million, five hundred two thousand, eight hundred thirty-seven".