400466542165 has 8 divisors (see below), whose sum is σ = 480563454168. Its totient is φ = 320370831360.

The previous prime is 400466542097. The next prime is 400466542181. The reversal of 400466542165 is 561245664004.

It can be written as a sum of positive squares in 4 ways, for example, as 86187454929 + 314279087236 = 293577^2 + 560606^2 .

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

It is not a de Polignac number, because 400466542165 - 2²¹ = 400464445013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 799005 + ... + 1199725.

It is an arithmetic number, because the mean of its divisors is an integer number (60070431771).

Almost surely, 2^400466542165 is an apocalyptic number.

It is an amenable number.

400466542165 is a deficient number, since it is larger than the sum of its proper divisors (80096912003).

400466542165 is a wasteful number, since it uses less digits than its factorization.

400466542165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600599.

The product of its (nonzero) digits is 691200, while the sum is 43.

The spelling of 400466542165 in words is "four hundred billion, four hundred sixty-six million, five hundred forty-two thousand, one hundred sixty-five".