401135525531105 has 4 divisors (see below), whose sum is σ = 481362630637332. Its totient is φ = 320908420424880.

The previous prime is 401135525531089. The next prime is 401135525531137. The reversal of 401135525531105 is 501135525531104.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 58784545083664 + 342350980447441 = 7667108^2 + 18502729^2 .

It is not a de Polignac number, because 401135525531105 - 2⁴ = 401135525531089 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40113552553106 + ... + 40113552553115.

It is an arithmetic number, because the mean of its divisors is an integer number (120340657659333).

Almost surely, 2^{401135525531105} is an apocalyptic number.

It is an amenable number.

401135525531105 is a deficient number, since it is larger than the sum of its proper divisors (80227105106227).

401135525531105 is an equidigital number, since it uses as much as digits as its factorization.

401135525531105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80227105106226.

The product of its (nonzero) digits is 225000, while the sum is 41.

Subtracting 401135525531105 from its reverse (501135525531104), we obtain a palindrome (99999999999999).

The spelling of 401135525531105 in words is "four hundred one trillion, one hundred thirty-five billion, five hundred twenty-five million, five hundred thirty-one thousand, one hundred five".