253612017643 has 8 divisors (see below), whose sum is σ = 268568485920. Its totient is φ = 238659784320.

The previous prime is 253612017641. The next prime is 253612017653. The reversal of 253612017643 is 346710216352.

It is a happy number.

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 253612017643 - 2¹ = 253612017641 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 253612017596 and 253612017605.

It is not an unprimeable number, because it can be changed into a prime (253612017641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 935023 + ... + 1175368.

It is an arithmetic number, because the mean of its divisors is an integer number (33571060740).

Almost surely, 2^253612017643 is an apocalyptic number.

253612017643 is a deficient number, since it is larger than the sum of its proper divisors (14956468277).

253612017643 is a wasteful number, since it uses less digits than its factorization.

253612017643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2117477.

The product of its (nonzero) digits is 181440, while the sum is 40.

The spelling of 253612017643 in words is "two hundred fifty-three billion, six hundred twelve million, seventeen thousand, six hundred forty-three".