349769349251 has 16 divisors (see below), whose sum is σ = 425256261120. Its totient is φ = 280829566080.

The previous prime is 349769349229. The next prime is 349769349271. The reversal of 349769349251 is 152943967943.

It is a de Polignac number, because none of the positive numbers 2^k-349769349251 is a prime.

It is a super-2 number, since 2×349769349251² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (349769349271) 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 15 ways as a sum of consecutive naturals, for example, 6939911 + ... + 6990128.

It is an arithmetic number, because the mean of its divisors is an integer number (26578516320).

Almost surely, 2^349769349251 is an apocalyptic number.

349769349251 is a deficient number, since it is larger than the sum of its proper divisors (75486911869).

349769349251 is a wasteful number, since it uses less digits than its factorization.

349769349251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13930274.

The product of its digits is 44089920, while the sum is 62.

The spelling of 349769349251 in words is "three hundred forty-nine billion, seven hundred sixty-nine million, three hundred forty-nine thousand, two hundred fifty-one".