261502045134 has 32 divisors (see below), whose sum is σ = 570738220416. Its totient is φ = 79216890720.

The previous prime is 261502045093. The next prime is 261502045139. The reversal of 261502045134 is 431540205162.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 261502045095 and 261502045104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261502045139) 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, 451872 + ... + 852755.

It is an arithmetic number, because the mean of its divisors is an integer number (17835569388).

Almost surely, 2^261502045134 is an apocalyptic number.

261502045134 is an abundant number, since it is smaller than the sum of its proper divisors (309236175282).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

261502045134 is a wasteful number, since it uses less digits than its factorization.

261502045134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1307680.

The product of its (nonzero) digits is 28800, while the sum is 33.

The spelling of 261502045134 in words is "two hundred sixty-one billion, five hundred two million, forty-five thousand, one hundred thirty-four".