261022596658 has 16 divisors (see below), whose sum is σ = 396584484480. Its totient is φ = 128828555856.

The previous prime is 261022596649. The next prime is 261022596661. The reversal of 261022596658 is 856695220162.

261022596658 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 475716 + ... + 865072.

It is an arithmetic number, because the mean of its divisors is an integer number (24786530280).

Almost surely, 2^261022596658 is an apocalyptic number.

261022596658 is a deficient number, since it is larger than the sum of its proper divisors (135561887822).

261022596658 is a wasteful number, since it uses less digits than its factorization.

261022596658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393681.

The product of its (nonzero) digits is 3110400, while the sum is 52.

The spelling of 261022596658 in words is "two hundred sixty-one billion, twenty-two million, five hundred ninety-six thousand, six hundred fifty-eight".