616242270121 has 9 divisors (see below), whose sum is σ = 621833513431. Its totient is φ = 610700877472.

The previous prime is 616242270113. The next prime is 616242270143. The reversal of 616242270121 is 121072242616.

The square root of 616242270121 is 785011.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 10858682025 + 605383588096 = 104205^2 + 778064^2 .

It is not a de Polignac number, because 616242270121 - 2³ = 616242270113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (616242270221) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 88702770 + ... + 88709716.

Almost surely, 2^616242270121 is an apocalyptic number.

616242270121 is the 785011-st square number.

616242270121 is the 392506-th centered octagonal number.

It is an amenable number.

616242270121 is a deficient number, since it is larger than the sum of its proper divisors (5591243310).

616242270121 is an frugal number, since it uses more digits than its factorization.

616242270121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14120 (or 7060 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The spelling of 616242270121 in words is "six hundred sixteen billion, two hundred forty-two million, two hundred seventy thousand, one hundred twenty-one".