263946268990 has 16 divisors (see below), whose sum is σ = 480827421648. Its totient is φ = 104306477056.

The previous prime is 263946268987. The next prime is 263946268991. The reversal of 263946268990 is 99862649362.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (263946268991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159002947 + ... + 159004606.

It is an arithmetic number, because the mean of its divisors is an integer number (30051713853).

Almost surely, 2^263946268990 is an apocalyptic number.

263946268990 is a deficient number, since it is larger than the sum of its proper divisors (216881152658).

263946268990 is a wasteful number, since it uses less digits than its factorization.

263946268990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318007643.

The product of its (nonzero) digits is 60466176, while the sum is 64.

The spelling of 263946268990 in words is "two hundred sixty-three billion, nine hundred forty-six million, two hundred sixty-eight thousand, nine hundred ninety".