268633031821501 has 8 divisors (see below), whose sum is σ = 274333684879800. Its totient is φ = 262955790070272.

The previous prime is 268633031821493. The next prime is 268633031821549. The reversal of 268633031821501 is 105128130336862.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2112877373476 + 266520154448025 = 1453574^2 + 16325445^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 268633031821501 - 2³ = 268633031821493 is a prime.

It is a super-2 number, since 2×268633031821501² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268633031821571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5852803576 + ... + 5852849473.

It is an arithmetic number, because the mean of its divisors is an integer number (34291710609975).

Almost surely, 2^{268633031821501} is an apocalyptic number.

It is an amenable number.

268633031821501 is a deficient number, since it is larger than the sum of its proper divisors (5700653058299).

268633031821501 is a wasteful number, since it uses less digits than its factorization.

268633031821501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11705653535.

The product of its (nonzero) digits is 1244160, while the sum is 49.

The spelling of 268633031821501 in words is "two hundred sixty-eight trillion, six hundred thirty-three billion, thirty-one million, eight hundred twenty-one thousand, five hundred one".