253612017645 has 16 divisors (see below), whose sum is σ = 463747689600. Its totient is φ = 115936922304.

The previous prime is 253612017641. The next prime is 253612017653. The reversal of 253612017645 is 546710216352.

It is not a de Polignac number, because 253612017645 - 2² = 253612017641 is a prime.

It is a super-3 number, since 3×253612017645³ (a number of 35 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 253612017597 and 253612017606.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 1207676170 + ... + 1207676379.

It is an arithmetic number, because the mean of its divisors is an integer number (28984230600).

Almost surely, 2^253612017645 is an apocalyptic number.

It is an amenable number.

253612017645 is a deficient number, since it is larger than the sum of its proper divisors (210135671955).

253612017645 is a wasteful number, since it uses less digits than its factorization.

253612017645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2415352564.

The product of its (nonzero) digits is 302400, while the sum is 42.

The spelling of 253612017645 in words is "two hundred fifty-three billion, six hundred twelve million, seventeen thousand, six hundred forty-five".