261030853050 has 192 divisors, whose sum is σ = 746084390400. Its totient is φ = 59731257600.

The previous prime is 261030852967. The next prime is 261030853051. The reversal of 261030853050 is 50358030162.

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

It is not an unprimeable number, because it can be changed into a prime (261030853051) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 8668921 + ... + 8698979.

It is an arithmetic number, because the mean of its divisors is an integer number (3885856200).

Almost surely, 2^261030853050 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 261030853050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (373042195200).

261030853050 is an abundant number, since it is smaller than the sum of its proper divisors (485053537350).

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

261030853050 is a wasteful number, since it uses less digits than its factorization.

261030853050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30381 (or 30376 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

The spelling of 261030853050 in words is "two hundred sixty-one billion, thirty million, eight hundred fifty-three thousand, fifty".