401853544261 has 16 divisors (see below), whose sum is σ = 440511273216. Its totient is φ = 364354047936.

The previous prime is 401853544207. The next prime is 401853544361. The reversal of 401853544261 is 162445358104.

It is a cyclic number.

It is not a de Polignac number, because 401853544261 - 2⁷ = 401853544133 is a prime.

It is a super-2 number, since 2×401853544261² (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 (401853544361) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 889725 + ... + 1263058.

It is an arithmetic number, because the mean of its divisors is an integer number (27531954576).

Almost surely, 2^401853544261 is an apocalyptic number.

It is an amenable number.

401853544261 is a deficient number, since it is larger than the sum of its proper divisors (38657728955).

401853544261 is a wasteful number, since it uses less digits than its factorization.

401853544261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2153052.

The product of its (nonzero) digits is 460800, while the sum is 43.

The spelling of 401853544261 in words is "four hundred one billion, eight hundred fifty-three million, five hundred forty-four thousand, two hundred sixty-one".