263900728351 has 16 divisors (see below), whose sum is σ = 294324287488. Its totient is φ = 234974584800.

The previous prime is 263900728321. The next prime is 263900728367. The reversal of 263900728351 is 153827009362.

It is a cyclic number.

It is not a de Polignac number, because 263900728351 - 2⁵ = 263900728319 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (263900728321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 942795 + ... + 1190236.

It is an arithmetic number, because the mean of its divisors is an integer number (18395267968).

Almost surely, 2^263900728351 is an apocalyptic number.

263900728351 is a deficient number, since it is larger than the sum of its proper divisors (30423559137).

263900728351 is a wasteful number, since it uses less digits than its factorization.

263900728351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2133382.

The product of its (nonzero) digits is 544320, while the sum is 46.

The spelling of 263900728351 in words is "two hundred sixty-three billion, nine hundred million, seven hundred twenty-eight thousand, three hundred fifty-one".