349718261761 has 8 divisors (see below), whose sum is σ = 381519964224. Its totient is φ = 317918081520.

The previous prime is 349718261749. The next prime is 349718261777. The reversal of 349718261761 is 167162817943.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-349718261761 is a prime.

It is a super-2 number, since 2×349718261761² (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 (349718261261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129556 + ... + 846298.

It is an arithmetic number, because the mean of its divisors is an integer number (47689995528).

Almost surely, 2^349718261761 is an apocalyptic number.

It is an amenable number.

349718261761 is a deficient number, since it is larger than the sum of its proper divisors (31801702463).

349718261761 is a wasteful number, since it uses less digits than its factorization.

349718261761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 761111.

The product of its digits is 3048192, while the sum is 55.

The spelling of 349718261761 in words is "three hundred forty-nine billion, seven hundred eighteen million, two hundred sixty-one thousand, seven hundred sixty-one".