261123540312363 has 8 divisors (see below), whose sum is σ = 348166484788800. Its totient is φ = 174081478022088.

The previous prime is 261123540312331. The next prime is 261123540312431. The reversal of 261123540312363 is 363213045321162.

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

It is not a de Polignac number, because 261123540312363 - 2⁵ = 261123540312331 is a prime.

It is a super-2 number, since 2×261123540312363² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (261123540312163) 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, 219855573 + ... + 221040086.

It is an arithmetic number, because the mean of its divisors is an integer number (43520810598600).

Almost surely, 2^{261123540312363} is an apocalyptic number.

261123540312363 is a deficient number, since it is larger than the sum of its proper divisors (87042944476437).

261123540312363 is a wasteful number, since it uses less digits than its factorization.

261123540312363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441093081.

The product of its (nonzero) digits is 466560, while the sum is 42.

The spelling of 261123540312363 in words is "two hundred sixty-one trillion, one hundred twenty-three billion, five hundred forty million, three hundred twelve thousand, three hundred sixty-three".