261453882204 has 18 divisors (see below), whose sum is σ = 660897313440. Its totient is φ = 87151294056.

The previous prime is 261453882181. The next prime is 261453882211. The reversal of 261453882204 is 402288354162.

261453882204 is a `hidden beast` number, since 2 + 6 + 1 + 45 + 388 + 220 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a self number, because there is not a number n which added to its sum of digits gives 261453882204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3631303884 + ... + 3631303955.

Almost surely, 2^261453882204 is an apocalyptic number.

It is an amenable number.

261453882204 is an abundant number, since it is smaller than the sum of its proper divisors (399443431236).

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

261453882204 is a wasteful number, since it uses less digits than its factorization.

261453882204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7262607849 (or 7262607844 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 45.

The spelling of 261453882204 in words is "two hundred sixty-one billion, four hundred fifty-three million, eight hundred eighty-two thousand, two hundred four".