400155143913 has 24 divisors (see below), whose sum is σ = 660841591488. Its totient is φ = 228567305952.

The previous prime is 400155143911. The next prime is 400155143917. The reversal of 400155143913 is 319341551004.

400155143913 is a `hidden beast` number, since 40 + 0 + 15 + 514 + 3 + 91 + 3 = 666.

It is not a de Polignac number, because 400155143913 - 2¹ = 400155143911 is a prime.

It is not an unprimeable number, because it can be changed into a prime (400155143911) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 1131906 + ... + 1442747.

It is an arithmetic number, because the mean of its divisors is an integer number (27535066312).

Almost surely, 2^400155143913 is an apocalyptic number.

It is an amenable number.

400155143913 is a deficient number, since it is larger than the sum of its proper divisors (260686447575).

400155143913 is a wasteful number, since it uses less digits than its factorization.

400155143913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2577133 (or 2577130 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

Adding to 400155143913 its reverse (319341551004), we get a palindrome (719496694917).

The spelling of 400155143913 in words is "four hundred billion, one hundred fifty-five million, one hundred forty-three thousand, nine hundred thirteen".