5621961516 has 12 divisors (see below), whose sum is σ = 13117910232. Its totient is φ = 1873987168.

The previous prime is 5621961511. The next prime is 5621961529. The reversal of 5621961516 is 6151691265.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (5621961511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 234248385 + ... + 234248408.

It is an arithmetic number, because the mean of its divisors is an integer number (1093159186).

Almost surely, 2^5621961516 is an apocalyptic number.

It is an amenable number.

5621961516 is an abundant number, since it is smaller than the sum of its proper divisors (7495948716).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5621961516 is a wasteful number, since it uses less digits than its factorization.

5621961516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468496800 (or 468496798 counting only the distinct ones).

The product of its digits is 97200, while the sum is 42.

The square root of 5621961516 is about 74979.7407037394. The cubic root of 5621961516 is about 1778.1263704681.

The spelling of 5621961516 in words is "five billion, six hundred twenty-one million, nine hundred sixty-one thousand, five hundred sixteen".