253422449356671 has 96 divisors (see below), whose sum is σ = 421389303229440. Its totient is φ = 143764758669312.

The previous prime is 253422449356513. The next prime is 253422449356709. The reversal of 253422449356671 is 176653944224352.

It is a happy number.

253422449356671 is a `hidden beast` number, since 2 + 5 + 3 + 4 + 2 + 24 + 49 + 3 + 566 + 7 + 1 = 666.

It is not a de Polignac number, because 253422449356671 - 2⁹ = 253422449356159 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a junction number, because it is equal to n+sod(n) for n = 253422449356599 and 253422449356608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253422449356471) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 6639812430 + ... + 6639850596.

It is an arithmetic number, because the mean of its divisors is an integer number (4389471908640).

Almost surely, 2^{253422449356671} is an apocalyptic number.

253422449356671 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

253422449356671 is a deficient number, since it is larger than the sum of its proper divisors (167966853872769).

253422449356671 is a wasteful number, since it uses less digits than its factorization.

253422449356671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39845 (or 39842 counting only the distinct ones).

The product of its digits is 261273600, while the sum is 63.

The spelling of 253422449356671 in words is "two hundred fifty-three trillion, four hundred twenty-two billion, four hundred forty-nine million, three hundred fifty-six thousand, six hundred seventy-one".