78878203386587 has 16 divisors (see below), whose sum is σ = 86176625407488. Its totient is φ = 71601064872480.

The previous prime is 78878203386583. The next prime is 78878203386607. The reversal of 78878203386587 is 78568330287887.

It is not a de Polignac number, because 78878203386587 - 2² = 78878203386583 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78878203386583) 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, 700628633 + ... + 700741205.

It is an arithmetic number, because the mean of its divisors is an integer number (5386039087968).

Almost surely, 2^{78878203386587} is an apocalyptic number.

78878203386587 is a deficient number, since it is larger than the sum of its proper divisors (7298422020901).

78878203386587 is a wasteful number, since it uses less digits than its factorization.

78878203386587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206530.

The product of its (nonzero) digits is 6069288960, while the sum is 80.

The spelling of 78878203386587 in words is "seventy-eight trillion, eight hundred seventy-eight billion, two hundred three million, three hundred eighty-six thousand, five hundred eighty-seven".