261543030102360 has 80 divisors (see below), whose sum is σ = 879075184521600. Its totient is φ = 69744808026432.

The previous prime is 261543030102349. The next prime is 261543030102413. The reversal of 261543030102360 is 63201030345162.

261543030102360 is a `hidden beast` number, since 2 + 6 + 1 + 543 + 0 + 3 + 0 + 102 + 3 + 6 + 0 = 666.

It is a super-2 number, since 2×261543030102360² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 40361575480 + ... + 40361581959.

It is an arithmetic number, because the mean of its divisors is an integer number (10988439806520).

Almost surely, 2^{261543030102360} is an apocalyptic number.

261543030102360 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

261543030102360 is an abundant number, since it is smaller than the sum of its proper divisors (617532154419240).

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

261543030102360 is a wasteful number, since it uses less digits than its factorization.

261543030102360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80723157462 (or 80723157449 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 36.

The spelling of 261543030102360 in words is "two hundred sixty-one trillion, five hundred forty-three billion, thirty million, one hundred two thousand, three hundred sixty".