64505780035078 has 8 divisors (see below), whose sum is σ = 97408057100400. Its totient is φ = 32036427668280.

The previous prime is 64505780035069. The next prime is 64505780035087. The reversal of 64505780035078 is 87053008750546.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (64505780035069) and next prime (64505780035087).

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

It is a congruent number.

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, 108231174258 + ... + 108231174853.

It is an arithmetic number, because the mean of its divisors is an integer number (12176007137550).

Almost surely, 2^{64505780035078} is an apocalyptic number.

64505780035078 is a deficient number, since it is larger than the sum of its proper divisors (32902277065322).

64505780035078 is a wasteful number, since it uses less digits than its factorization.

64505780035078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216462349262.

The product of its (nonzero) digits is 28224000, while the sum is 58.

The spelling of 64505780035078 in words is "sixty-four trillion, five hundred five billion, seven hundred eighty million, thirty-five thousand, seventy-eight".