340660420438 has 32 divisors (see below), whose sum is σ = 551254354560. Its totient is φ = 156954792960.

The previous prime is 340660420423. The next prime is 340660420439. The reversal of 340660420438 is 834024066043.

It is a super-2 number, since 2×340660420438² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 340660420438.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340660420439) 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 15 ways as a sum of consecutive naturals, for example, 39946531 + ... + 39955057.

It is an arithmetic number, because the mean of its divisors is an integer number (17226698580).

Almost surely, 2^340660420438 is an apocalyptic number.

340660420438 is a deficient number, since it is larger than the sum of its proper divisors (210593934122).

340660420438 is a wasteful number, since it uses less digits than its factorization.

340660420438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11032.

The product of its (nonzero) digits is 331776, while the sum is 40.

The spelling of 340660420438 in words is "three hundred forty billion, six hundred sixty million, four hundred twenty thousand, four hundred thirty-eight".