263708428321 has 8 divisors (see below), whose sum is σ = 290598197120. Its totient is φ = 237762160272.

The previous prime is 263708428307. The next prime is 263708428339. The reversal of 263708428321 is 123824807362.

263708428321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 263708428321 - 2¹⁵ = 263708395553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (263708428301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 235874601 + ... + 235875718.

It is an arithmetic number, because the mean of its divisors is an integer number (36324774640).

Almost surely, 2^263708428321 is an apocalyptic number.

It is an amenable number.

263708428321 is a deficient number, since it is larger than the sum of its proper divisors (26889768799).

263708428321 is a wasteful number, since it uses less digits than its factorization.

263708428321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471750375.

The product of its (nonzero) digits is 774144, while the sum is 46.

The spelling of 263708428321 in words is "two hundred sixty-three billion, seven hundred eight million, four hundred twenty-eight thousand, three hundred twenty-one".