400143513205 has 8 divisors (see below), whose sum is σ = 480182450904. Its totient is φ = 320107987200.

The previous prime is 400143513179. The next prime is 400143513269. The reversal of 400143513205 is 502315341004.

It can be written as a sum of positive squares in 4 ways, for example, as 7113572964 + 393029940241 = 84342^2 + 626921^2 .

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

It is not a de Polignac number, because 400143513205 - 2³³ = 391553578613 is a prime.

It is a super-2 number, since 2×400143513205² (a number of 24 digits) contains 22 as substring.

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, 587376 + ... + 1070185.

It is an arithmetic number, because the mean of its divisors is an integer number (60022806363).

Almost surely, 2^400143513205 is an apocalyptic number.

It is an amenable number.

400143513205 is a deficient number, since it is larger than the sum of its proper divisors (80038937699).

400143513205 is a wasteful number, since it uses less digits than its factorization.

400143513205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1705847.

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 400143513205 its reverse (502315341004), we get a palindrome (902458854209).

The spelling of 400143513205 in words is "four hundred billion, one hundred forty-three million, five hundred thirteen thousand, two hundred five".