340497405558 has 96 divisors (see below), whose sum is σ = 779120284800. Its totient is φ = 107173497600.

The previous prime is 340497405557. The next prime is 340497405607. The reversal of 340497405558 is 855504794043.

It is a happy number.

340497405558 is a `hidden beast` number, since 3 + 4 + 0 + 49 + 7 + 40 + 5 + 558 = 666.

It is a super-3 number, since 3×340497405558³ (a number of 36 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340497405551) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 228674478 + ... + 228675966.

It is an arithmetic number, because the mean of its divisors is an integer number (8115836300).

Almost surely, 2^340497405558 is an apocalyptic number.

340497405558 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 340497405558, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (389560142400).

340497405558 is an abundant number, since it is smaller than the sum of its proper divisors (438622879242).

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

340497405558 is a wasteful number, since it uses less digits than its factorization.

340497405558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3258 (or 3255 counting only the distinct ones).

The product of its (nonzero) digits is 12096000, while the sum is 54.

The spelling of 340497405558 in words is "three hundred forty billion, four hundred ninety-seven million, four hundred five thousand, five hundred fifty-eight".