261235608882 has 16 divisors (see below), whose sum is σ = 522494248032. Its totient is φ = 87074697920.

The previous prime is 261235608871. The next prime is 261235608899. The reversal of 261235608882 is 288806532162.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 810348 + ... + 1085879.

It is an arithmetic number, because the mean of its divisors is an integer number (32655890502).

Almost surely, 2^261235608882 is an apocalyptic number.

261235608882 is an abundant number, since it is smaller than the sum of its proper divisors (261258639150).

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

261235608882 is a wasteful number, since it uses less digits than its factorization.

261235608882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1919193.

The product of its (nonzero) digits is 2211840, while the sum is 51.

The spelling of 261235608882 in words is "two hundred sixty-one billion, two hundred thirty-five million, six hundred eight thousand, eight hundred eighty-two".