401155323445543 has 4 divisors (see below), whose sum is σ = 410484517014088. Its totient is φ = 391826129877000.

The previous prime is 401155323445537. The next prime is 401155323445561. The reversal of 401155323445543 is 345544323551104.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-401155323445543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401155323445043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4664596784208 + ... + 4664596784293.

It is an arithmetic number, because the mean of its divisors is an integer number (102621129253522).

Almost surely, 2^{401155323445543} is an apocalyptic number.

401155323445543 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

401155323445543 is a deficient number, since it is larger than the sum of its proper divisors (9329193568545).

401155323445543 is an equidigital number, since it uses as much as digits as its factorization.

401155323445543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9329193568544.

The product of its (nonzero) digits is 8640000, while the sum is 49.

Adding to 401155323445543 its reverse (345544323551104), we get a palindrome (746699646996647).

The spelling of 401155323445543 in words is "four hundred one trillion, one hundred fifty-five billion, three hundred twenty-three million, four hundred forty-five thousand, five hundred forty-three".