401155323445544 has 8 divisors (see below), whose sum is σ = 752166231460410. Its totient is φ = 200577661722768.

The previous prime is 401155323445537. The next prime is 401155323445561. The reversal of 401155323445544 is 445544323551104.

It can be written as a sum of positive squares in only one way, i.e., 334202639064100 + 66952684381444 = 18281210^2 + 8182462^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 401155323445492 and 401155323445501.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25072207715339 + ... + 25072207715354.

Almost surely, 2^{401155323445544} is an apocalyptic number.

It is an amenable number.

401155323445544 is a deficient number, since it is larger than the sum of its proper divisors (351010908014866).

401155323445544 is a wasteful number, since it uses less digits than its factorization.

401155323445544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50144415430699 (or 50144415430695 counting only the distinct ones).

The product of its (nonzero) digits is 11520000, while the sum is 50.

Adding to 401155323445544 its reverse (445544323551104), we get a palindrome (846699646996648).

The spelling of 401155323445544 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-four".