263663730790 has 16 divisors (see below), whose sum is σ = 478948797360. Its totient is φ = 104497918560.

The previous prime is 263663730779. The next prime is 263663730821. The reversal of 263663730790 is 97037366362.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120945576 + ... + 120947755.

It is an arithmetic number, because the mean of its divisors is an integer number (29934299835).

Almost surely, 2^263663730790 is an apocalyptic number.

263663730790 is a deficient number, since it is larger than the sum of its proper divisors (215285066570).

263663730790 is a wasteful number, since it uses less digits than its factorization.

263663730790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241893447.

The product of its (nonzero) digits is 5143824, while the sum is 52.

The spelling of 263663730790 in words is "two hundred sixty-three billion, six hundred sixty-three million, seven hundred thirty thousand, seven hundred ninety".