263839090664 has 16 divisors (see below), whose sum is σ = 497733256320. Its totient is φ = 131110222320.

The previous prime is 263839090663. The next prime is 263839090681. The reversal of 263839090664 is 466090938362.

263839090664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×263839090664² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (263839090663) 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 3 ways as a sum of consecutive naturals, for example, 101163992 + ... + 101166599.

It is an arithmetic number, because the mean of its divisors is an integer number (31108328520).

Almost surely, 2^263839090664 is an apocalyptic number.

It is an amenable number.

263839090664 is a deficient number, since it is larger than the sum of its proper divisors (233894165656).

263839090664 is a wasteful number, since it uses less digits than its factorization.

263839090664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202330760 (or 202330756 counting only the distinct ones).

The product of its (nonzero) digits is 10077696, while the sum is 56.

The spelling of 263839090664 in words is "two hundred sixty-three billion, eight hundred thirty-nine million, ninety thousand, six hundred sixty-four".