349776028691 has 16 divisors (see below), whose sum is σ = 360979526208. Its totient is φ = 338703552000.

The previous prime is 349776028681. The next prime is 349776028739. The reversal of 349776028691 is 196820677943.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-349776028691 is a prime.

It is not an unprimeable number, because it can be changed into a prime (349776028601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7635431 + ... + 7681103.

It is an arithmetic number, because the mean of its divisors is an integer number (22561220388).

Almost surely, 2^349776028691 is an apocalyptic number.

349776028691 is a deficient number, since it is larger than the sum of its proper divisors (11203497517).

349776028691 is a wasteful number, since it uses less digits than its factorization.

349776028691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47102.

The product of its (nonzero) digits is 27433728, while the sum is 62.

The spelling of 349776028691 in words is "three hundred forty-nine billion, seven hundred seventy-six million, twenty-eight thousand, six hundred ninety-one".