253644061641 has 32 divisors (see below), whose sum is σ = 342454704768. Its totient is φ = 166979205120.

The previous prime is 253644061609. The next prime is 253644061703. The reversal of 253644061641 is 146160446352.

It is not a de Polignac number, because 253644061641 - 2⁵ = 253644061609 is a prime.

It is a super-5 number, since 5×253644061641⁵ (a number of 58 digits) contains 55555 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 253644061593 and 253644061602.

It is not an unprimeable number, because it can be changed into a prime (253644021641) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 149465305 + ... + 149467001.

It is an arithmetic number, because the mean of its divisors is an integer number (10701709524).

Almost surely, 2^253644061641 is an apocalyptic number.

It is an amenable number.

253644061641 is a deficient number, since it is larger than the sum of its proper divisors (88810643127).

253644061641 is a wasteful number, since it uses less digits than its factorization.

253644061641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3481.

The product of its (nonzero) digits is 414720, while the sum is 42.

The spelling of 253644061641 in words is "two hundred fifty-three billion, six hundred forty-four million, sixty-one thousand, six hundred forty-one".