78564672717207 has 16 divisors (see below), whose sum is σ = 106730726506848. Its totient is φ = 51387558884480.

The previous prime is 78564672717149. The next prime is 78564672717211. The reversal of 78564672717207 is 70271727646587.

It is a cyclic number.

It is not a de Polignac number, because 78564672717207 - 2¹⁴ = 78564672700823 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78564672717257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9531457 + ... + 15747317.

It is an arithmetic number, because the mean of its divisors is an integer number (6670670406678).

Almost surely, 2^{78564672717207} is an apocalyptic number.

78564672717207 is a deficient number, since it is larger than the sum of its proper divisors (28166053789641).

78564672717207 is a wasteful number, since it uses less digits than its factorization.

78564672717207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6295410.

The product of its (nonzero) digits is 387233280, while the sum is 69.

The spelling of 78564672717207 in words is "seventy-eight trillion, five hundred sixty-four billion, six hundred seventy-two million, seven hundred seventeen thousand, two hundred seven".