345776677543 has 4 divisors (see below), whose sum is σ = 377210920968. Its totient is φ = 314342434120.

The previous prime is 345776677529. The next prime is 345776677549.

It is a happy number.

345776677543 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 345776677543 - 2⁹ = 345776677031 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345776677549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15717121696 + ... + 15717121717.

It is an arithmetic number, because the mean of its divisors is an integer number (94302730242).

Almost surely, 2^345776677543 is an apocalyptic number.

345776677543 is a deficient number, since it is larger than the sum of its proper divisors (31434243425).

345776677543 is a wasteful number, since it uses less digits than its factorization.

345776677543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31434243424.

The product of its digits is 311169600, while the sum is 64.

The spelling of 345776677543 in words is "three hundred forty-five billion, seven hundred seventy-six million, six hundred seventy-seven thousand, five hundred forty-three".