261563350453235 has 8 divisors (see below), whose sum is σ = 316167086388096. Its totient is φ = 207723303133120.

The previous prime is 261563350453187. The next prime is 261563350453277. The reversal of 261563350453235 is 532354053365162.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 261563350453235 - 2⁸ = 261563350452979 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 190922152931 + ... + 190922154300.

It is an arithmetic number, because the mean of its divisors is an integer number (39520885798512).

Almost surely, 2^{261563350453235} is an apocalyptic number.

261563350453235 is a deficient number, since it is larger than the sum of its proper divisors (54603735934861).

261563350453235 is a wasteful number, since it uses less digits than its factorization.

261563350453235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381844307373.

The product of its (nonzero) digits is 29160000, while the sum is 53.

The spelling of 261563350453235 in words is "two hundred sixty-one trillion, five hundred sixty-three billion, three hundred fifty million, four hundred fifty-three thousand, two hundred thirty-five".