340666511251 has 4 divisors (see below), whose sum is σ = 371636194104. Its totient is φ = 309696828400.

The previous prime is 340666511249. The next prime is 340666511257. The reversal of 340666511251 is 152115666043.

It is a happy number.

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 340666511251 - 2¹ = 340666511249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (340666511257) 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, 15484841410 + ... + 15484841431.

It is an arithmetic number, because the mean of its divisors is an integer number (92909048526).

Almost surely, 2^340666511251 is an apocalyptic number.

340666511251 is a deficient number, since it is larger than the sum of its proper divisors (30969682853).

340666511251 is a wasteful number, since it uses less digits than its factorization.

340666511251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30969682852.

The product of its (nonzero) digits is 129600, while the sum is 40.

The spelling of 340666511251 in words is "three hundred forty billion, six hundred sixty-six million, five hundred eleven thousand, two hundred fifty-one".