263211944878079 has 32 divisors (see below), whose sum is σ = 279979001184960. Its totient is φ = 246739336704000.

The previous prime is 263211944878031. The next prime is 263211944878199. The reversal of 263211944878079 is 970878449112362.

It is a cyclic number.

It is not a de Polignac number, because 263211944878079 - 2⁸ = 263211944877823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (263211944878279) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35015553629 + ... + 35015561145.

It is an arithmetic number, because the mean of its divisors is an integer number (8749343787030).

Almost surely, 2^{263211944878079} is an apocalyptic number.

263211944878079 is a deficient number, since it is larger than the sum of its proper divisors (16767056306881).

263211944878079 is a wasteful number, since it uses less digits than its factorization.

263211944878079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16331.

The product of its (nonzero) digits is 292626432, while the sum is 71.

The spelling of 263211944878079 in words is "two hundred sixty-three trillion, two hundred eleven billion, nine hundred forty-four million, eight hundred seventy-eight thousand, seventy-nine".