401400552165 has 8 divisors (see below), whose sum is σ = 642240883488. Its totient is φ = 214080294480.

The previous prime is 401400552149. The next prime is 401400552191. The reversal of 401400552165 is 561255004104.

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

It is not a de Polignac number, because 401400552165 - 2⁴ = 401400552149 is a prime.

It is a super-2 number, since 2×401400552165² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13380018391 + ... + 13380018420.

It is an arithmetic number, because the mean of its divisors is an integer number (80280110436).

Almost surely, 2^401400552165 is an apocalyptic number.

It is an amenable number.

401400552165 is a deficient number, since it is larger than the sum of its proper divisors (240840331323).

401400552165 is a wasteful number, since it uses less digits than its factorization.

401400552165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26760036819.

The product of its (nonzero) digits is 24000, while the sum is 33.

Adding to 401400552165 its reverse (561255004104), we get a palindrome (962655556269).

The spelling of 401400552165 in words is "four hundred one billion, four hundred million, five hundred fifty-two thousand, one hundred sixty-five".