263220755255251 has 8 divisors (see below), whose sum is σ = 264537692090784. Its totient is φ = 261906665852160.

The previous prime is 263220755255239. The next prime is 263220755255273. The reversal of 263220755255251 is 152552557022362.

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 263220755255251 - 2³⁷ = 263083316301779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (263220755255551) 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, 711672766 + ... + 712042531.

It is an arithmetic number, because the mean of its divisors is an integer number (33067211511348).

Almost surely, 2^{263220755255251} is an apocalyptic number.

263220755255251 is a deficient number, since it is larger than the sum of its proper divisors (1316936835533).

263220755255251 is a wasteful number, since it uses less digits than its factorization.

263220755255251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1423716221.

The product of its (nonzero) digits is 12600000, while the sum is 52.

The spelling of 263220755255251 in words is "two hundred sixty-three trillion, two hundred twenty billion, seven hundred fifty-five million, two hundred fifty-five thousand, two hundred fifty-one".