268666018362356 has 48 divisors (see below), whose sum is σ = 474490253389824. Its totient is φ = 133102912167936.

The previous prime is 268666018362353. The next prime is 268666018362361. The reversal of 268666018362356 is 653263810666862.

It is a super-2 number, since 2×268666018362356² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268666018362353) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 443074676 + ... + 443680628.

It is an arithmetic number, because the mean of its divisors is an integer number (9885213612288).

Almost surely, 2^{268666018362356} is an apocalyptic number.

It is an amenable number.

268666018362356 is a deficient number, since it is larger than the sum of its proper divisors (205824235027468).

268666018362356 is a wasteful number, since it uses less digits than its factorization.

268666018362356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 608240 (or 608238 counting only the distinct ones).

The product of its (nonzero) digits is 537477120, while the sum is 68.

The spelling of 268666018362356 in words is "two hundred sixty-eight trillion, six hundred sixty-six billion, eighteen million, three hundred sixty-two thousand, three hundred fifty-six".