401352254643645 has 16 divisors (see below), whose sum is σ = 713515119366720. Its totient is φ = 214054535809872.

The previous prime is 401352254643631. The next prime is 401352254643647. The reversal of 401352254643645 is 546346452253104.

401352254643645 is a `hidden beast` number, since 4 + 0 + 1 + 3 + 5 + 22 + 546 + 4 + 36 + 45 = 666.

It is not a de Polignac number, because 401352254643645 - 2¹⁹ = 401352254119357 is a prime.

It is a super-2 number, since 2×401352254643645² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 401352254643591 and 401352254643600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401352254643647) 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, 1486489831879 + ... + 1486489832148.

It is an arithmetic number, because the mean of its divisors is an integer number (44594694960420).

Almost surely, 2^{401352254643645} is an apocalyptic number.

401352254643645 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

401352254643645 is a deficient number, since it is larger than the sum of its proper divisors (312162864723075).

401352254643645 is a wasteful number, since it uses less digits than its factorization.

401352254643645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2972979664041 (or 2972979664035 counting only the distinct ones).

The product of its (nonzero) digits is 41472000, while the sum is 54.

The spelling of 401352254643645 in words is "four hundred one trillion, three hundred fifty-two billion, two hundred fifty-four million, six hundred forty-three thousand, six hundred forty-five".