64334355536545 has 8 divisors (see below), whose sum is σ = 77251066050600. Its totient is φ = 51434258158080.

The previous prime is 64334355536527. The next prime is 64334355536567. The reversal of 64334355536545 is 54563555343346.

It can be written as a sum of positive squares in 4 ways, for example, as 20563846801 + 64313791689744 = 143401^2 + 8019588^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-64334355536545 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4153275376 + ... + 4153290865.

It is an arithmetic number, because the mean of its divisors is an integer number (9656383256325).

Almost surely, 2^{64334355536545} is an apocalyptic number.

It is an amenable number.

64334355536545 is a deficient number, since it is larger than the sum of its proper divisors (12916710514055).

64334355536545 is a wasteful number, since it uses less digits than its factorization.

64334355536545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8306567795.

The product of its digits is 583200000, while the sum is 61.

The spelling of 64334355536545 in words is "sixty-four trillion, three hundred thirty-four billion, three hundred fifty-five million, five hundred thirty-six thousand, five hundred forty-five".