261583700248 has 32 divisors (see below), whose sum is σ = 529051294800. Its totient is φ = 120535867008.

The previous prime is 261583700243. The next prime is 261583700267. The reversal of 261583700248 is 842007385162.

261583700248 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 261583700198 and 261583700207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261583700243) 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, 1967311 + ... + 2096062.

Almost surely, 2^261583700248 is an apocalyptic number.

It is an amenable number.

261583700248 is an abundant number, since it is smaller than the sum of its proper divisors (267467594552).

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

261583700248 is a wasteful number, since it uses less digits than its factorization.

261583700248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4064011 (or 4064007 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 46.

The spelling of 261583700248 in words is "two hundred sixty-one billion, five hundred eighty-three million, seven hundred thousand, two hundred forty-eight".