340155245251 has 4 divisors (see below), whose sum is σ = 340156427472. Its totient is φ = 340154063032.

The previous prime is 340155245249. The next prime is 340155245267. The reversal of 340155245251 is 152542551043.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 340155245251 - 2¹ = 340155245249 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 340155245251.

It is not an unprimeable number, because it can be changed into a prime (340155245231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 151245 + ... + 838561.

It is an arithmetic number, because the mean of its divisors is an integer number (85039106868).

Almost surely, 2^340155245251 is an apocalyptic number.

340155245251 is a deficient number, since it is larger than the sum of its proper divisors (1182221).

340155245251 is an equidigital number, since it uses as much as digits as its factorization.

340155245251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1182220.

The product of its (nonzero) digits is 120000, while the sum is 37.

Adding to 340155245251 its reverse (152542551043), we get a palindrome (492697796294).

The spelling of 340155245251 in words is "three hundred forty billion, one hundred fifty-five million, two hundred forty-five thousand, two hundred fifty-one".