78560561024641 has 4 divisors (see below), whose sum is σ = 78561612343984. Its totient is φ = 78559509705300.

The previous prime is 78560561024611. The next prime is 78560561024681. The reversal of 78560561024641 is 14642016506587.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 78560561024641 - 2⁷ = 78560561024513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78560561024611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 525547575 + ... + 525697036.

It is an arithmetic number, because the mean of its divisors is an integer number (19640403085996).

Almost surely, 2^{78560561024641} is an apocalyptic number.

It is an amenable number.

78560561024641 is a deficient number, since it is larger than the sum of its proper divisors (1051319343).

78560561024641 is a wasteful number, since it uses less digits than its factorization.

78560561024641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1051319342.

The product of its (nonzero) digits is 9676800, while the sum is 55.

The spelling of 78560561024641 in words is "seventy-eight trillion, five hundred sixty billion, five hundred sixty-one million, twenty-four thousand, six hundred forty-one".