206516002004 has 48 divisors (see below), whose sum is σ = 392752539648. Its totient is φ = 94447721088.

The previous prime is 206516001973. The next prime is 206516002067. The reversal of 206516002004 is 400200615602.

It is a super-2 number, since 2×206516002004² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5442602 + ... + 5480414.

It is an arithmetic number, because the mean of its divisors is an integer number (8182344576).

Almost surely, 2^206516002004 is an apocalyptic number.

It is an amenable number.

206516002004 is a deficient number, since it is larger than the sum of its proper divisors (186236537644).

206516002004 is a wasteful number, since it uses less digits than its factorization.

206516002004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38784 (or 38782 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 206516002004 its reverse (400200615602), we get a palindrome (606716617606).

The spelling of 206516002004 in words is "two hundred six billion, five hundred sixteen million, two thousand, four".