256335620136002 has 32 divisors (see below), whose sum is σ = 424949195268864. Its totient is φ = 114993830304400.

The previous prime is 256335620135993. The next prime is 256335620136007. The reversal of 256335620136002 is 200631026533652.

It is not an unprimeable number, because it can be changed into a prime (256335620136007) 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, 70513748 + ... + 74059839.

It is an arithmetic number, because the mean of its divisors is an integer number (13279662352152).

Almost surely, 2^{256335620136002} is an apocalyptic number.

256335620136002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

256335620136002 is a deficient number, since it is larger than the sum of its proper divisors (168613575132862).

256335620136002 is a wasteful number, since it uses less digits than its factorization.

256335620136002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144574654.

The product of its (nonzero) digits is 1166400, while the sum is 44.

Adding to 256335620136002 its reverse (200631026533652), we get a palindrome (456966646669654).

The spelling of 256335620136002 in words is "two hundred fifty-six trillion, three hundred thirty-five billion, six hundred twenty million, one hundred thirty-six thousand, two".