253400582645 has 16 divisors (see below), whose sum is σ = 348873032448. Its totient is φ = 173084282880.

The previous prime is 253400582641. The next prime is 253400582663. The reversal of 253400582645 is 546285004352.

It is not a de Polignac number, because 253400582645 - 2² = 253400582641 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 253400582596 and 253400582605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253400582641) 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, 14076641 + ... + 14094630.

It is an arithmetic number, because the mean of its divisors is an integer number (21804564528).

Almost surely, 2^253400582645 is an apocalyptic number.

It is an amenable number.

253400582645 is a deficient number, since it is larger than the sum of its proper divisors (95472449803).

253400582645 is a wasteful number, since it uses less digits than its factorization.

253400582645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28171540.

The product of its (nonzero) digits is 1152000, while the sum is 44.

Adding to 253400582645 its reverse (546285004352), we get a palindrome (799685586997).

The spelling of 253400582645 in words is "two hundred fifty-three billion, four hundred million, five hundred eighty-two thousand, six hundred forty-five".