6247445261121 has 45 divisors (see below), whose sum is σ = 9394471010001. Its totient is φ = 4137534115128.

The previous prime is 6247445261119. The next prime is 6247445261131. The reversal of 6247445261121 is 1211625447426.

The square root of 6247445261121 is 2499489.

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

6247445261121 is a `hidden beast` number, since 6 + 2 + 4 + 7 + 4 + 4 + 5 + 2 + 611 + 21 = 666.

It is not a de Polignac number, because 6247445261121 - 2¹ = 6247445261119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6247445261131) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 3756731136 + ... + 3756732798.

Almost surely, 2^{6247445261121} is an apocalyptic number.

6247445261121 is the 2499489-th square number.

6247445261121 is the 1249745-th centered octagonal number.

It is an amenable number.

6247445261121 is a deficient number, since it is larger than the sum of its proper divisors (3147025748880).

6247445261121 is an frugal number, since it uses more digits than its factorization.

6247445261121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3672 (or 1833 counting only the distinct ones).

The product of its digits is 645120, while the sum is 45.

The spelling of 6247445261121 in words is "six trillion, two hundred forty-seven billion, four hundred forty-five million, two hundred sixty-one thousand, one hundred twenty-one".