401040250511 has 4 divisors (see below), whose sum is σ = 401061048024. Its totient is φ = 401019453000.

The previous prime is 401040250459. The next prime is 401040250519. The reversal of 401040250511 is 115052040104.

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

It is a cyclic number.

It is not a de Polignac number, because 401040250511 - 2⁶ = 401040250447 is a prime.

It is a super-2 number, since 2×401040250511² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401040250519) 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, 10369805 + ... + 10408406.

It is an arithmetic number, because the mean of its divisors is an integer number (100265262006).

Almost surely, 2^401040250511 is an apocalyptic number.

401040250511 is a deficient number, since it is larger than the sum of its proper divisors (20797513).

401040250511 is a wasteful number, since it uses less digits than its factorization.

401040250511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20797512.

The product of its (nonzero) digits is 800, while the sum is 23.

Adding to 401040250511 its reverse (115052040104), we get a palindrome (516092290615).

The spelling of 401040250511 in words is "four hundred one billion, forty million, two hundred fifty thousand, five hundred eleven".