401544370421 has 8 divisors (see below), whose sum is σ = 410216534784. Its totient is φ = 392877567280.

The previous prime is 401544370379. The next prime is 401544370441. The reversal of 401544370421 is 124073445104.

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-401544370421 is a prime.

It is a super-2 number, since 2×401544370421² (a number of 24 digits) contains 22 as substring.

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 (401544370441) 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, 1188710 + ... + 1488663.

It is an arithmetic number, because the mean of its divisors is an integer number (51277066848).

Almost surely, 2^401544370421 is an apocalyptic number.

It is an amenable number.

401544370421 is a deficient number, since it is larger than the sum of its proper divisors (8672164363).

401544370421 is a wasteful number, since it uses less digits than its factorization.

401544370421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2680611.

The product of its (nonzero) digits is 53760, while the sum is 35.

The spelling of 401544370421 in words is "four hundred one billion, five hundred forty-four million, three hundred seventy thousand, four hundred twenty-one".