263803838428 has 12 divisors (see below), whose sum is σ = 497168772520. Its totient is φ = 121755617712.

The previous prime is 263803838423. The next prime is 263803838443. The reversal of 263803838428 is 824838308362.

It is a super-2 number, since 2×263803838428² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (263803838423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2536575318 + ... + 2536575421.

Almost surely, 2^263803838428 is an apocalyptic number.

It is an amenable number.

263803838428 is a deficient number, since it is larger than the sum of its proper divisors (233364934092).

263803838428 is a wasteful number, since it uses less digits than its factorization.

263803838428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5073150756 (or 5073150754 counting only the distinct ones).

The product of its (nonzero) digits is 10616832, while the sum is 55.

The spelling of 263803838428 in words is "two hundred sixty-three billion, eight hundred three million, eight hundred thirty-eight thousand, four hundred twenty-eight".