261535050437253 has 8 divisors (see below), whose sum is σ = 348714498000768. Its totient is φ = 174356151582624.

The previous prime is 261535050437237. The next prime is 261535050437261. The reversal of 261535050437253 is 352734050535162.

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

It is not a de Polignac number, because 261535050437253 - 2⁴ = 261535050437237 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 261535050437196 and 261535050437205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261535050437263) 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, 136063776 + ... + 137972537.

It is an arithmetic number, because the mean of its divisors is an integer number (43589312250096).

Almost surely, 2^{261535050437253} is an apocalyptic number.

It is an amenable number.

261535050437253 is a deficient number, since it is larger than the sum of its proper divisors (87179447563515).

261535050437253 is a wasteful number, since it uses less digits than its factorization.

261535050437253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274354443.

The product of its (nonzero) digits is 11340000, while the sum is 51.

The spelling of 261535050437253 in words is "two hundred sixty-one trillion, five hundred thirty-five billion, fifty million, four hundred thirty-seven thousand, two hundred fifty-three".