268136001333631 has 4 divisors (see below), whose sum is σ = 275382920288632. Its totient is φ = 260889082378632.

The previous prime is 268136001333623. The next prime is 268136001333659. The reversal of 268136001333631 is 136333100631862.

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 268136001333631 - 2³ = 268136001333623 is a prime.

It is a super-2 number, since 2×268136001333631² (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 (268136001333611) 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, 3623459477445 + ... + 3623459477518.

It is an arithmetic number, because the mean of its divisors is an integer number (68845730072158).

Almost surely, 2^{268136001333631} is an apocalyptic number.

268136001333631 is a deficient number, since it is larger than the sum of its proper divisors (7246918955001).

268136001333631 is an equidigital number, since it uses as much as digits as its factorization.

268136001333631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7246918955000.

The product of its (nonzero) digits is 839808, while the sum is 46.

The spelling of 268136001333631 in words is "two hundred sixty-eight trillion, one hundred thirty-six billion, one million, three hundred thirty-three thousand, six hundred thirty-one".