340206400999 has 4 divisors (see below), whose sum is σ = 340208729064. Its totient is φ = 340204072936.

The previous prime is 340206400967. The next prime is 340206401011. The reversal of 340206400999 is 999004602043.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 340206400999 - 2⁵ = 340206400967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340206400949) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 929017 + ... + 1242370.

It is an arithmetic number, because the mean of its divisors is an integer number (85052182266).

Almost surely, 2^340206400999 is an apocalyptic number.

340206400999 is a deficient number, since it is larger than the sum of its proper divisors (2328065).

340206400999 is a wasteful number, since it uses less digits than its factorization.

340206400999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2328064.

The product of its (nonzero) digits is 419904, while the sum is 46.

The spelling of 340206400999 in words is "three hundred forty billion, two hundred six million, four hundred thousand, nine hundred ninety-nine".