253113665506 has 32 divisors (see below), whose sum is σ = 409475824128. Its totient is φ = 116650450560.

The previous prime is 253113665443. The next prime is 253113665509. The reversal of 253113665506 is 605566311352.

253113665506 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (253113665509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96129966 + ... + 96132598.

It is an arithmetic number, because the mean of its divisors is an integer number (12796119504).

Almost surely, 2^253113665506 is an apocalyptic number.

253113665506 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

253113665506 is a deficient number, since it is larger than the sum of its proper divisors (156362158622).

253113665506 is a wasteful number, since it uses less digits than its factorization.

253113665506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6666.

The product of its (nonzero) digits is 486000, while the sum is 43.

Adding to 253113665506 its reverse (605566311352), we get a palindrome (858679976858).

The spelling of 253113665506 in words is "two hundred fifty-three billion, one hundred thirteen million, six hundred sixty-five thousand, five hundred six".