340653646511 has 4 divisors (see below), whose sum is σ = 344165539872. Its totient is φ = 337141753152.

The previous prime is 340653646471. The next prime is 340653646513. The reversal of 340653646511 is 115646356043.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 115646356043 = 50549 ⋅2287807.

It is a cyclic number.

It is not a de Polignac number, because 340653646511 - 2³⁴ = 323473777327 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 (340653646513) 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, 1755946535 + ... + 1755946728.

It is an arithmetic number, because the mean of its divisors is an integer number (86041384968).

Almost surely, 2^340653646511 is an apocalyptic number.

340653646511 is a deficient number, since it is larger than the sum of its proper divisors (3511893361).

340653646511 is an equidigital number, since it uses as much as digits as its factorization.

340653646511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3511893360.

The product of its (nonzero) digits is 777600, while the sum is 44.

The spelling of 340653646511 in words is "three hundred forty billion, six hundred fifty-three million, six hundred forty-six thousand, five hundred eleven".