78878602605387 has 24 divisors (see below), whose sum is σ = 113913276690864. Its totient is φ = 48528157152384.

The previous prime is 78878602605337. The next prime is 78878602605463. The reversal of 78878602605387 is 78350620687887.

It is not a de Polignac number, because 78878602605387 - 2¹⁰ = 78878602604363 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78878602605337) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18098728 + ... + 22030005.

It is an arithmetic number, because the mean of its divisors is an integer number (4746386528786).

Almost surely, 2^{78878602605387} is an apocalyptic number.

78878602605387 is a deficient number, since it is larger than the sum of its proper divisors (35034674085477).

78878602605387 is a wasteful number, since it uses less digits than its factorization.

78878602605387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40132639 (or 40132626 counting only the distinct ones).

The product of its (nonzero) digits is 1517322240, while the sum is 75.

The spelling of 78878602605387 in words is "seventy-eight trillion, eight hundred seventy-eight billion, six hundred two million, six hundred five thousand, three hundred eighty-seven".