263938751455105 has 8 divisors (see below), whose sum is σ = 316968832665792. Its totient is φ = 210989447217648.

The previous prime is 263938751455087. The next prime is 263938751455111. The reversal of 263938751455105 is 501554157839362.

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 263938751455105 - 2²⁵ = 263938717900673 is a prime.

It is a super-2 number, since 2×263938751455105² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20194236117 + ... + 20194249186.

It is an arithmetic number, because the mean of its divisors is an integer number (39621104083224).

It is a 1-persistent number, because it is pandigital, but 2⋅263938751455105 = 527877502910210 is not.

Almost surely, 2^{263938751455105} is an apocalyptic number.

It is an amenable number.

263938751455105 is a deficient number, since it is larger than the sum of its proper divisors (53030081210687).

263938751455105 is a wasteful number, since it uses less digits than its factorization.

263938751455105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40388486615.

The product of its (nonzero) digits is 136080000, while the sum is 64.

The spelling of 263938751455105 in words is "two hundred sixty-three trillion, nine hundred thirty-eight billion, seven hundred fifty-one million, four hundred fifty-five thousand, one hundred five".