640300364545 has 8 divisors (see below), whose sum is σ = 770143178880. Its totient is φ = 511051797360.

The previous prime is 640300364537. The next prime is 640300364597. The reversal of 640300364545 is 545463003046.

It is a happy number.

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

It is not a de Polignac number, because 640300364545 - 2³ = 640300364537 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 640300364498 and 640300364507.

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, 148559415 + ... + 148563724.

It is an arithmetic number, because the mean of its divisors is an integer number (96267897360).

Almost surely, 2^640300364545 is an apocalyptic number.

It is an amenable number.

640300364545 is a deficient number, since it is larger than the sum of its proper divisors (129842814335).

640300364545 is a wasteful number, since it uses less digits than its factorization.

640300364545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297123575.

The product of its (nonzero) digits is 518400, while the sum is 40.

The spelling of 640300364545 in words is "six hundred forty billion, three hundred million, three hundred sixty-four thousand, five hundred forty-five".