10949561613 has 10 divisors (see below), whose sum is σ = 16356752654. Its totient is φ = 7299707688.

The previous prime is 10949561591. The next prime is 10949561633. The reversal of 10949561613 is 31616594901.

10949561613 is a `hidden beast` number, since 10 + 9 + 4 + 9 + 5 + 616 + 13 = 666.

It can be written as a sum of positive squares in only one way, i.e., 6659049609 + 4290512004 = 81603^2 + 65502^2 .

It is not a de Polignac number, because 10949561613 - 2¹⁸ = 10949299469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10949561633) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 67589806 + ... + 67589967.

Almost surely, 2^10949561613 is an apocalyptic number.

It is an amenable number.

10949561613 is a deficient number, since it is larger than the sum of its proper divisors (5407191041).

10949561613 is an equidigital number, since it uses as much as digits as its factorization.

10949561613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135179785 (or 135179776 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 45.

The spelling of 10949561613 in words is "ten billion, nine hundred forty-nine million, five hundred sixty-one thousand, six hundred thirteen".