401511541421 has 8 divisors (see below), whose sum is σ = 404449229184. Its totient is φ = 398578667760.

The previous prime is 401511541399. The next prime is 401511541427. The reversal of 401511541421 is 124145115104.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-401511541421 is a prime.

It is a super-4 number, since 4×401511541421⁴ (a number of 48 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401511541427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1036025 + ... + 1369806.

It is an arithmetic number, because the mean of its divisors is an integer number (50556153648).

Almost surely, 2^401511541421 is an apocalyptic number.

It is an amenable number.

401511541421 is a deficient number, since it is larger than the sum of its proper divisors (2937687763).

401511541421 is a wasteful number, since it uses less digits than its factorization.

401511541421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2407051.

The product of its (nonzero) digits is 3200, while the sum is 29.

Adding to 401511541421 its reverse (124145115104), we get a palindrome (525656656525).

The spelling of 401511541421 in words is "four hundred one billion, five hundred eleven million, five hundred forty-one thousand, four hundred twenty-one".