7330994871561 has 81 divisors (see below), whose sum is σ = 10992553186797. Its totient is φ = 4707941842800.

The previous prime is 7330994871533. The next prime is 7330994871569. The reversal of 7330994871561 is 1651784990337.

The square root of 7330994871561 is 2707581.

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

7330994871561 is a `hidden beast` number, since 7 + 3 + 3 + 0 + 99 + 487 + 1 + 5 + 61 = 666.

It is not a de Polignac number, because 7330994871561 - 2¹⁵ = 7330994838793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7330994871569) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 48549634836 + ... + 48549634986.

Almost surely, 2^{7330994871561} is an apocalyptic number.

7330994871561 is the 2707581-st square number.

7330994871561 is the 1353791-st centered octagonal number.

It is an amenable number.

7330994871561 is a deficient number, since it is larger than the sum of its proper divisors (3661558315236).

7330994871561 is an equidigital number, since it uses as much as digits as its factorization.

7330994871561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 672 (or 336 counting only the distinct ones).

The product of its (nonzero) digits is 34292160, while the sum is 63.

The spelling of 7330994871561 in words is "seven trillion, three hundred thirty billion, nine hundred ninety-four million, eight hundred seventy-one thousand, five hundred sixty-one".