263216632057 has 4 divisors (see below), whose sum is σ = 263219312016. Its totient is φ = 263213952100.

The previous prime is 263216632051. The next prime is 263216632067. The reversal of 263216632057 is 750236612362.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 263216632057 - 2⁷ = 263216631929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (263216632051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1186819 + ... + 1391032.

It is an arithmetic number, because the mean of its divisors is an integer number (65804828004).

Almost surely, 2^263216632057 is an apocalyptic number.

It is an amenable number.

263216632057 is a deficient number, since it is larger than the sum of its proper divisors (2679959).

263216632057 is a wasteful number, since it uses less digits than its factorization.

263216632057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2679958.

The product of its (nonzero) digits is 544320, while the sum is 43.

The spelling of 263216632057 in words is "two hundred sixty-three billion, two hundred sixteen million, six hundred thirty-two thousand, fifty-seven".