261063741 has 16 divisors (see below), whose sum is σ = 360142848. Its totient is φ = 168039600.

The previous prime is 261063739. The next prime is 261063797. The reversal of 261063741 is 147360162.

It is not a de Polignac number, because 261063741 - 2¹ = 261063739 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 261063699 and 261063708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261063641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40426 + ... + 46436.

It is an arithmetic number, because the mean of its divisors is an integer number (22508928).

Almost surely, 2^261063741 is an apocalyptic number.

It is an amenable number.

261063741 is a deficient number, since it is larger than the sum of its proper divisors (99079107).

261063741 is a wasteful number, since it uses less digits than its factorization.

261063741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6512.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 261063741 is about 16157.4670353988. The cubic root of 261063741 is about 639.1196726300.

The spelling of 261063741 in words is "two hundred sixty-one million, sixty-three thousand, seven hundred forty-one".