261535762273513 has 8 divisors (see below), whose sum is σ = 321890168952128. Its totient is φ = 206929394326224.

The previous prime is 261535762273417. The next prime is 261535762273523. The reversal of 261535762273513 is 315372267535162.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 261535762273513 - 2¹³ = 261535762265321 is a prime.

It is a super-2 number, since 2×261535762273513² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (261535762273523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1437009682731 + ... + 1437009682912.

It is an arithmetic number, because the mean of its divisors is an integer number (40236271119016).

Almost surely, 2^{261535762273513} is an apocalyptic number.

It is an amenable number.

261535762273513 is a deficient number, since it is larger than the sum of its proper divisors (60354406678615).

261535762273513 is a wasteful number, since it uses less digits than its factorization.

261535762273513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2874019365663.

The product of its digits is 47628000, while the sum is 58.

The spelling of 261535762273513 in words is "two hundred sixty-one trillion, five hundred thirty-five billion, seven hundred sixty-two million, two hundred seventy-three thousand, five hundred thirteen".