64340770545 has 48 divisors (see below), whose sum is σ = 112168992000. Its totient is φ = 34116888960.

The previous prime is 64340770541. The next prime is 64340770573. The reversal of 64340770545 is 54507704346.

64340770545 is a `hidden beast` number, since 6 + 4 + 34 + 0 + 7 + 70 + 545 = 666.

It is not a de Polignac number, because 64340770545 - 2² = 64340770541 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 64340770545.

It is not an unprimeable number, because it can be changed into a prime (64340770541) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 20693451 + ... + 20696559.

It is an arithmetic number, because the mean of its divisors is an integer number (2336854000).

Almost surely, 2^64340770545 is an apocalyptic number.

It is an amenable number.

64340770545 is a deficient number, since it is larger than the sum of its proper divisors (47828221455).

64340770545 is a wasteful number, since it uses less digits than its factorization.

64340770545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5630 (or 5627 counting only the distinct ones).

The product of its (nonzero) digits is 1411200, while the sum is 45.

The spelling of 64340770545 in words is "sixty-four billion, three hundred forty million, seven hundred seventy thousand, five hundred forty-five".