34318721545 has 4 divisors (see below), whose sum is σ = 41182465860. Its totient is φ = 27454977232.

The previous prime is 34318721537. The next prime is 34318721551. The reversal of 34318721545 is 54512781343.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54512781343 = 43 ⋅1267739101.

It can be written as a sum of positive squares in 2 ways, for example, as 12512883321 + 21805838224 = 111861^2 + 147668^2 .

It is a cyclic number.

It is not a de Polignac number, because 34318721545 - 2³ = 34318721537 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3431872150 + ... + 3431872159.

It is an arithmetic number, because the mean of its divisors is an integer number (10295616465).

Almost surely, 2^34318721545 is an apocalyptic number.

It is an amenable number.

34318721545 is a deficient number, since it is larger than the sum of its proper divisors (6863744315).

34318721545 is an equidigital number, since it uses as much as digits as its factorization.

34318721545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6863744314.

The product of its digits is 403200, while the sum is 43.

The spelling of 34318721545 in words is "thirty-four billion, three hundred eighteen million, seven hundred twenty-one thousand, five hundred forty-five".