345601777517 has 4 divisors (see below), whose sum is σ = 357519080220. Its totient is φ = 333684474816.

The previous prime is 345601777513. The next prime is 345601777519. The reversal of 345601777517 is 715777106543.

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

It can be written as a sum of positive squares in 2 ways, for example, as 115994055241 + 229607722276 = 340579^2 + 479174^2 .

It is a cyclic number.

It is not a de Polignac number, because 345601777517 - 2² = 345601777513 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 (345601777513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5958651308 + ... + 5958651365.

It is an arithmetic number, because the mean of its divisors is an integer number (89379770055).

Almost surely, 2^345601777517 is an apocalyptic number.

It is an amenable number.

345601777517 is a deficient number, since it is larger than the sum of its proper divisors (11917302703).

345601777517 is a wasteful number, since it uses less digits than its factorization.

345601777517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11917302702.

The product of its (nonzero) digits is 4321800, while the sum is 53.

The spelling of 345601777517 in words is "three hundred forty-five billion, six hundred one million, seven hundred seventy-seven thousand, five hundred seventeen".