20620215004 has 6 divisors (see below), whose sum is σ = 36085376264. Its totient is φ = 10310107500.

The previous prime is 20620214983. The next prime is 20620215053. The reversal of 20620215004 is 40051202602.

It is a super-2 number, since 2×20620215004² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2577526872 + ... + 2577526879.

Almost surely, 2^20620215004 is an apocalyptic number.

It is an amenable number.

20620215004 is a deficient number, since it is larger than the sum of its proper divisors (15465161260).

20620215004 is a wasteful number, since it uses less digits than its factorization.

20620215004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5155053755 (or 5155053753 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

Adding to 20620215004 its reverse (40051202602), we get a palindrome (60671417606).

The spelling of 20620215004 in words is "twenty billion, six hundred twenty million, two hundred fifteen thousand, four".