400243414154 has 4 divisors (see below), whose sum is σ = 600365121234. Its totient is φ = 200121707076.

The previous prime is 400243414139. The next prime is 400243414171. The reversal of 400243414154 is 451414342004.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 380818581025 + 19424833129 = 617105^2 + 139373^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 400243414154.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100060853537 + ... + 100060853540.

Almost surely, 2^400243414154 is an apocalyptic number.

400243414154 is a deficient number, since it is larger than the sum of its proper divisors (200121707080).

400243414154 is a wasteful number, since it uses less digits than its factorization.

400243414154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200121707079.

The product of its (nonzero) digits is 30720, while the sum is 32.

Adding to 400243414154 its reverse (451414342004), we get a palindrome (851657756158).

The spelling of 400243414154 in words is "four hundred billion, two hundred forty-three million, four hundred fourteen thousand, one hundred fifty-four".