78265127110564 has 9 divisors (see below), whose sum is σ = 136964003407147. Its totient is φ = 39132554708524.

The previous prime is 78265127110481. The next prime is 78265127110571. The reversal of 78265127110564 is 46501172156287.

The square root of 78265127110564 is 8846758.

It is a perfect power (a square), and thus also a powerful number.

It is a super-2 number, since 2×78265127110564² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 15481827 + ... + 19905205.

Almost surely, 2^{78265127110564} is an apocalyptic number.

78265127110564 is the 8846758-th square number.

It is an amenable number.

78265127110564 is a deficient number, since it is larger than the sum of its proper divisors (58698876296583).

78265127110564 is an frugal number, since it uses more digits than its factorization.

78265127110564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8846762 (or 4423381 counting only the distinct ones).

The product of its (nonzero) digits is 5644800, while the sum is 55.

The spelling of 78265127110564 in words is "seventy-eight trillion, two hundred sixty-five billion, one hundred twenty-seven million, one hundred ten thousand, five hundred sixty-four".