261456021363 has 8 divisors (see below), whose sum is σ = 350433202176. Its totient is φ = 173391427400.

The previous prime is 261456021329. The next prime is 261456021377. The reversal of 261456021363 is 363120654162.

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

It is a cyclic number.

It is not a de Polignac number, because 261456021363 - 2¹⁰ = 261456020339 is a prime.

It is a super-2 number, since 2×261456021363² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (261456021763) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 228146043 + ... + 228147188.

It is an arithmetic number, because the mean of its divisors is an integer number (43804150272).

Almost surely, 2^261456021363 is an apocalyptic number.

261456021363 is a deficient number, since it is larger than the sum of its proper divisors (88977180813).

261456021363 is a wasteful number, since it uses less digits than its factorization.

261456021363 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456293425.

The product of its (nonzero) digits is 155520, while the sum is 39.

The spelling of 261456021363 in words is "two hundred sixty-one billion, four hundred fifty-six million, twenty-one thousand, three hundred sixty-three".