154343456440 has 16 divisors (see below), whose sum is σ = 347272777080. Its totient is φ = 61737382560.

The previous prime is 154343456413. The next prime is 154343456503. The reversal of 154343456440 is 44654343451.

It is a super-3 number, since 3×154343456440³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1929293166 + ... + 1929293245.

Almost surely, 2^154343456440 is an apocalyptic number.

154343456440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

154343456440 is an abundant number, since it is smaller than the sum of its proper divisors (192929320640).

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

154343456440 is a wasteful number, since it uses less digits than its factorization.

154343456440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3858586422 (or 3858586418 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 43.

Adding to 154343456440 its reverse (44654343451), we get a palindrome (198997799891).

The spelling of 154343456440 in words is "one hundred fifty-four billion, three hundred forty-three million, four hundred fifty-six thousand, four hundred forty".