340405145943 has 16 divisors (see below), whose sum is σ = 460367136480. Its totient is φ = 223693691904.

The previous prime is 340405145911. The next prime is 340405145963. The reversal of 340405145943 is 349541504043.

It is not a de Polignac number, because 340405145943 - 2⁵ = 340405145911 is a prime.

It is a super-4 number, since 4×340405145943⁴ (a number of 47 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 340405145895 and 340405145904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340405145963) 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, 100146 + ... + 831167.

It is an arithmetic number, because the mean of its divisors is an integer number (28772946030).

Almost surely, 2^340405145943 is an apocalyptic number.

340405145943 is a deficient number, since it is larger than the sum of its proper divisors (119961990537).

340405145943 is a wasteful number, since it uses less digits than its factorization.

340405145943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 933058.

The product of its (nonzero) digits is 518400, while the sum is 42.

Adding to 340405145943 its reverse (349541504043), we get a palindrome (689946649986).

The spelling of 340405145943 in words is "three hundred forty billion, four hundred five million, one hundred forty-five thousand, nine hundred forty-three".