5961311649 has 12 divisors (see below), whose sum is σ = 8985165696. Its totient is φ = 3801415992.

The previous prime is 5961311627. The next prime is 5961311663. The reversal of 5961311649 is 9461131695.

5961311649 is a `hidden beast` number, since 596 + 1 + 3 + 1 + 16 + 49 = 666.

It is not a de Polignac number, because 5961311649 - 2¹³ = 5961303457 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5961311689) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14399097 + ... + 14399510.

It is an arithmetic number, because the mean of its divisors is an integer number (748763808).

Almost surely, 2^5961311649 is an apocalyptic number.

It is an amenable number.

5961311649 is a deficient number, since it is larger than the sum of its proper divisors (3023854047).

5961311649 is a wasteful number, since it uses less digits than its factorization.

5961311649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28798636 (or 28798633 counting only the distinct ones).

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

The square root of 5961311649 is about 77209.5308171213. The cubic root of 5961311649 is about 1813.2065347520.

The spelling of 5961311649 in words is "five billion, nine hundred sixty-one million, three hundred eleven thousand, six hundred forty-nine".