2100256616 has 8 divisors (see below), whose sum is σ = 3937981170. Its totient is φ = 1050128304.

The previous prime is 2100256607. The next prime is 2100256649. The reversal of 2100256616 is 6166520012.

It can be written as a sum of positive squares in only one way, i.e., 1690032100 + 410224516 = 41110^2 + 20254^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-3 number, since 3×2100256616³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131266031 + ... + 131266046.

Almost surely, 2^2100256616 is an apocalyptic number.

It is an amenable number.

2100256616 is a deficient number, since it is larger than the sum of its proper divisors (1837724554).

2100256616 is a wasteful number, since it uses less digits than its factorization.

2100256616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262532083 (or 262532079 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 2100256616 is about 45828.5567741337. The cubic root of 2100256616 is about 1280.6313243079.

Adding to 2100256616 its reverse (6166520012), we get a palindrome (8266776628).

The spelling of 2100256616 in words is "two billion, one hundred million, two hundred fifty-six thousand, six hundred sixteen".