400154000000 has 224 divisors, whose sum is σ = 1039908564000. Its totient is φ = 153084800000.

The previous prime is 400153999961. The next prime is 400154000003. The reversal of 400154000000 is 451004.

It is not an unprimeable number, because it can be changed into a prime (400154000003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 45995651 + ... + 46004349.

Almost surely, 2^400154000000 is an apocalyptic number.

400154000000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 400154000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (519954282000).

400154000000 is an abundant number, since it is smaller than the sum of its proper divisors (639754564000).

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

400154000000 is an frugal number, since it uses more digits than its factorization.

400154000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8766 (or 8729 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

Adding to 400154000000 its reverse (451004), we get a palindrome (400154451004).

The spelling of 400154000000 in words is "four hundred billion, one hundred fifty-four million", and thus it is an aban number.