6461001616 has 10 divisors (see below), whose sum is σ = 12518190662. Its totient is φ = 3230500800.

The previous prime is 6461001607. The next prime is 6461001637. The reversal of 6461001616 is 6161001646.

It can be written as a sum of positive squares in only one way, i.e., 4390387600 + 2070614016 = 66260^2 + 45504^2 .

It is a super-2 number, since 2×6461001616² = 83489083763909222912, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201906285 + ... + 201906316.

Almost surely, 2^6461001616 is an apocalyptic number.

It is an amenable number.

6461001616 is a deficient number, since it is larger than the sum of its proper divisors (6057189046).

6461001616 is a wasteful number, since it uses less digits than its factorization.

6461001616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403812609 (or 403812603 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 6461001616 is about 80380.3559086423. The cubic root of 6461001616 is about 1862.5157325278.

The spelling of 6461001616 in words is "six billion, four hundred sixty-one million, one thousand, six hundred sixteen".