261062613250 has 32 divisors (see below), whose sum is σ = 489704776704. Its totient is φ = 104212318000.

The previous prime is 261062613193. The next prime is 261062613277. The reversal of 261062613250 is 52316260162.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 940642 + ... + 1186141.

It is an arithmetic number, because the mean of its divisors is an integer number (15303274272).

Almost surely, 2^261062613250 is an apocalyptic number.

261062613250 is a deficient number, since it is larger than the sum of its proper divisors (228642163454).

261062613250 is a wasteful number, since it uses less digits than its factorization.

261062613250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2127291 (or 2127281 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

The spelling of 261062613250 in words is "two hundred sixty-one billion, sixty-two million, six hundred thirteen thousand, two hundred fifty".