6242907013561 has 27 divisors (see below), whose sum is σ = 6457910035143. Its totient is φ = 6034972604160.

The previous prime is 6242907013549. The next prime is 6242907013601. The reversal of 6242907013561 is 1653107092426.

It is a happy number.

The square root of 6242907013561 is 2498581.

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

It can be written as a sum of positive squares in 13 ways, for example, as 5789466389161 + 453440624400 = 2406131^2 + 673380^2 .

It is not a de Polignac number, because 6242907013561 - 2¹³ = 6242907005369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6242907013501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 15263831125 + ... + 15263831533.

Almost surely, 2^{6242907013561} is an apocalyptic number.

6242907013561 is the 2498581-st square number.

6242907013561 is the 1249291-st centered octagonal number.

It is an amenable number.

6242907013561 is a deficient number, since it is larger than the sum of its proper divisors (215003021582).

6242907013561 is an frugal number, since it uses more digits than its factorization.

6242907013561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1198 (or 599 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 46.

The spelling of 6242907013561 in words is "six trillion, two hundred forty-two billion, nine hundred seven million, thirteen thousand, five hundred sixty-one".