268790825391 has 16 divisors (see below), whose sum is σ = 413966619648. Its totient is φ = 153320969600.

The previous prime is 268790825363. The next prime is 268790825399. The reversal of 268790825391 is 193528097862.

It is a cyclic number.

It is not a de Polignac number, because 268790825391 - 2⁶ = 268790825327 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268790825399) 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, 239563455 + ... + 239564576.

It is an arithmetic number, because the mean of its divisors is an integer number (25872913728).

Almost surely, 2^268790825391 is an apocalyptic number.

268790825391 is a deficient number, since it is larger than the sum of its proper divisors (145175794257).

268790825391 is a wasteful number, since it uses less digits than its factorization.

268790825391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479128062.

The product of its (nonzero) digits is 13063680, while the sum is 60.

The spelling of 268790825391 in words is "two hundred sixty-eight billion, seven hundred ninety million, eight hundred twenty-five thousand, three hundred ninety-one".