268062653663 has 4 divisors (see below), whose sum is σ = 306357318480. Its totient is φ = 229767988848.

The previous prime is 268062653659. The next prime is 268062653693. The reversal of 268062653663 is 366356260862.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 268062653663 - 2² = 268062653659 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 (268062653693) 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, 19147332398 + ... + 19147332411.

It is an arithmetic number, because the mean of its divisors is an integer number (76589329620).

Almost surely, 2^268062653663 is an apocalyptic number.

268062653663 is a deficient number, since it is larger than the sum of its proper divisors (38294664817).

268062653663 is an equidigital number, since it uses as much as digits as its factorization.

268062653663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38294664816.

The product of its (nonzero) digits is 11197440, while the sum is 53.

The spelling of 268062653663 in words is "two hundred sixty-eight billion, sixty-two million, six hundred fifty-three thousand, six hundred sixty-three".