400143541154440 has 64 divisors (see below), whose sum is σ = 900456967177200. Its totient is φ = 160033596552192.

The previous prime is 400143541154327. The next prime is 400143541154443. The reversal of 400143541154440 is 44451145341004.

It can be written as a sum of positive squares in 8 ways, for example, as 207633632612004 + 192509908542436 = 14409498^2 + 13874794^2 .

It is a super-2 number, since 2×400143541154440² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 400143541154393 and 400143541154402.

It is not an unprimeable number, because it can be changed into a prime (400143541154443) 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, 10810873374 + ... + 10810910386.

Almost surely, 2^{400143541154440} is an apocalyptic number.

400143541154440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

400143541154440 is an abundant number, since it is smaller than the sum of its proper divisors (500313426022760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

400143541154440 is a wasteful number, since it uses less digits than its factorization.

400143541154440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69946 (or 69942 counting only the distinct ones).

The product of its (nonzero) digits is 307200, while the sum is 40.

Adding to 400143541154440 its reverse (44451145341004), we get a palindrome (444594686495444).

The spelling of 400143541154440 in words is "four hundred trillion, one hundred forty-three billion, five hundred forty-one million, one hundred fifty-four thousand, four hundred forty".