78878363302577 has 16 divisors (see below), whose sum is σ = 86904595844352. Its totient is φ = 71287994868480.

The previous prime is 78878363302549. The next prime is 78878363302591. The reversal of 78878363302577 is 77520336387887.

It is a cyclic number.

It is not a de Polignac number, because 78878363302577 - 2¹² = 78878363298481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78878363302177) 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, 931291199 + ... + 931375892.

It is an arithmetic number, because the mean of its divisors is an integer number (5431537240272).

Almost surely, 2^{78878363302577} is an apocalyptic number.

It is an amenable number.

78878363302577 is a deficient number, since it is larger than the sum of its proper divisors (8026232541775).

78878363302577 is a wasteful number, since it uses less digits than its factorization.

78878363302577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1862667208.

The product of its (nonzero) digits is 1991485440, while the sum is 74.

The spelling of 78878363302577 in words is "seventy-eight trillion, eight hundred seventy-eight billion, three hundred sixty-three million, three hundred two thousand, five hundred seventy-seven".