261032826052020 has 96 divisors (see below), whose sum is σ = 801343349452800. Its totient is φ = 62962691679360.

The previous prime is 261032826052001. The next prime is 261032826052043. The reversal of 261032826052020 is 20250628230162.

It is a self number, because there is not a number n which added to its sum of digits gives 261032826052020.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 993598012 + ... + 993860691.

It is an arithmetic number, because the mean of its divisors is an integer number (8347326556800).

Almost surely, 2^{261032826052020} is an apocalyptic number.

261032826052020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

261032826052020 is an abundant number, since it is smaller than the sum of its proper divisors (540310523400780).

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

261032826052020 is a wasteful number, since it uses less digits than its factorization.

261032826052020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1987458925 (or 1987458923 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 39.

The spelling of 261032826052020 in words is "two hundred sixty-one trillion, thirty-two billion, eight hundred twenty-six million, fifty-two thousand, twenty".